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55330455 = 353688697
BaseRepresentation
bin1101001100010…
…0011010010111
310212010002010010
43103010122113
5103131033310
65253531303
71241205165
oct323043227
9125102103
1055330455
1129261654
1216643b33
13b60371b
1474c4235
154cce320
hex34c4697

55330455 has 8 divisors (see below), whose sum is σ = 88528752. Its totient is φ = 29509568.

The previous prime is 55330453. The next prime is 55330459. The reversal of 55330455 is 55403355.

55330455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55330455 - 21 = 55330453 is a prime.

It is a super-2 number, since 2×553304552 = 6122918501014050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55330453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1844334 + ... + 1844363.

It is an arithmetic number, because the mean of its divisors is an integer number (11066094).

Almost surely, 255330455 is an apocalyptic number.

55330455 is a deficient number, since it is larger than the sum of its proper divisors (33198297).

55330455 is a wasteful number, since it uses less digits than its factorization.

55330455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3688705.

The product of its (nonzero) digits is 22500, while the sum is 30.

The square root of 55330455 is about 7438.4443938232. Note that the first 3 decimals coincide. The cubic root of 55330455 is about 381.0553649539.

Subtracting 55330455 from its reverse (55403355), we obtain a square (72900 = 2702).

The spelling of 55330455 in words is "fifty-five million, three hundred thirty thousand, four hundred fifty-five".

Divisors: 1 3 5 15 3688697 11066091 18443485 55330455