55875729 has 32 divisors (see below), whose sum is σ = 93587200. Its totient is φ = 29465856.

The previous prime is 55875709. The next prime is 55875731. The reversal of 55875729 is 92757855.

It is not a de Polignac number, because 55875729 - 2⁷ = 55875601 is a prime.

Its product of digits (882000) is a multiple of the sum of its prime divisors (4200).

It is not an unprimeable number, because it can be changed into a prime (55875709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11289 + ... + 15465.

It is an arithmetic number, because the mean of its divisors is an integer number (2924600).

Almost surely, 2^55875729 is an apocalyptic number.

It is an amenable number.

55875729 is a deficient number, since it is larger than the sum of its proper divisors (37711471).

55875729 is a wasteful number, since it uses less digits than its factorization.

55875729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4214 (or 4200 counting only the distinct ones).

The product of its digits is 882000, while the sum is 48.

The square root of 55875729 is about 7475.0069565185. The cubic root of 55875729 is about 382.3030247295.

The spelling of 55875729 in words is "fifty-five million, eight hundred seventy-five thousand, seven hundred twenty-nine".