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55000029 = 372619049
BaseRepresentation
bin1101000111001…
…1101111011101
310211111021212010
43101303233131
5103040000104
65242501433
71235330640
oct321635735
9124437763
1055000029
1129056377
1216504879
13b5191c6
147439a57
154c66489
hex3473bdd

55000029 has 8 divisors (see below), whose sum is σ = 83809600. Its totient is φ = 31428576.

The previous prime is 55000027. The next prime is 55000031. The reversal of 55000029 is 92000055.

It is an interprime number because it is at equal distance from previous prime (55000027) and next prime (55000031).

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

It is not a de Polignac number, because 55000029 - 21 = 55000027 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 2619049 = 55000029 / (5 + 5 + 0 + 0 + 0 + 0 + 2 + 9).

It is a junction number, because it is equal to n+sod(n) for n = 54999969 and 55000014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55000027) 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 7 ways as a sum of consecutive naturals, for example, 1309504 + ... + 1309545.

It is an arithmetic number, because the mean of its divisors is an integer number (10476200).

Almost surely, 255000029 is an apocalyptic number.

It is an amenable number.

55000029 is a deficient number, since it is larger than the sum of its proper divisors (28809571).

55000029 is a wasteful number, since it uses less digits than its factorization.

55000029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2619059.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 55000029 is about 7416.2004422750. The cubic root of 55000029 is about 380.2953129159.

The spelling of 55000029 in words is "fifty-five million, twenty-nine", and thus it is an aban number and an uban number.

Divisors: 1 3 7 21 2619049 7857147 18333343 55000029