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55033245 = 3253733053
BaseRepresentation
bin1101000111101…
…1110110011101
310211112222102100
43101323312131
5103042030440
65243315313
71235526531
oct321736635
9124488370
1055033245
1129079323
121651bb39
13b52b367
147447bc1
154c71230
hex347bd9d

55033245 has 24 divisors (see below), whose sum is σ = 97972056. Its totient is φ = 28556928.

The previous prime is 55033243. The next prime is 55033247. The reversal of 55033245 is 54233055.

It is an interprime number because it is at equal distance from previous prime (55033243) and next prime (55033247).

It can be written as a sum of positive squares in 4 ways, for example, as 24860196 + 30173049 = 4986^2 + 5493^2 .

It is not a de Polignac number, because 55033245 - 21 = 55033243 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55033243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14862 + ... + 18191.

It is an arithmetic number, because the mean of its divisors is an integer number (4082169).

Almost surely, 255033245 is an apocalyptic number.

It is an amenable number.

55033245 is a deficient number, since it is larger than the sum of its proper divisors (42938811).

55033245 is a wasteful number, since it uses less digits than its factorization.

55033245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33101 (or 33098 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 55033245 is about 7418.4395259381. The cubic root of 55033245 is about 380.3718543728.

It can be divided in two parts, 55033 and 245, that added together give a triangular number (55278 = T332).

The spelling of 55033245 in words is "fifty-five million, thirty-three thousand, two hundred forty-five".

Divisors: 1 3 5 9 15 37 45 111 185 333 555 1665 33053 99159 165265 297477 495795 1222961 1487385 3668883 6114805 11006649 18344415 55033245