55642910 has 16 divisors (see below), whose sum is σ = 100542816. Its totient is φ = 22171488.

The previous prime is 55642901. The next prime is 55642927. The reversal of 55642910 is 1924655.

It is a happy number.

It is a super-2 number, since 2×55642910² = 6192266866536200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7949 + ... + 13208.

It is an arithmetic number, because the mean of its divisors is an integer number (6283926).

Almost surely, 2^55642910 is an apocalyptic number.

55642910 is a deficient number, since it is larger than the sum of its proper divisors (44899906).

55642910 is a wasteful number, since it uses less digits than its factorization.

55642910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21427.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 55642910 is about 7459.4175375829. The cubic root of 55642910 is about 381.7713012083.

The spelling of 55642910 in words is "fifty-five million, six hundred forty-two thousand, nine hundred ten".