55729401 has 16 divisors (see below), whose sum is σ = 91453824. Its totient is φ = 29395584.

The previous prime is 55729393. The next prime is 55729433. The reversal of 55729401 is 10492755.

It is not a de Polignac number, because 55729401 - 2³ = 55729393 is a prime.

It is a super-2 number, since 2×55729401² = 6211532271637602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55729301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101796 + ... + 102341.

It is an arithmetic number, because the mean of its divisors is an integer number (5715864).

Almost surely, 2^55729401 is an apocalyptic number.

It is an amenable number.

55729401 is a deficient number, since it is larger than the sum of its proper divisors (35724423).

55729401 is a wasteful number, since it uses less digits than its factorization.

55729401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204160.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 55729401 is about 7465.2127230240. The cubic root of 55729401 is about 381.9690064673.

The spelling of 55729401 in words is "fifty-five million, seven hundred twenty-nine thousand, four hundred one".