55610690 has 32 divisors (see below), whose sum is σ = 104528880. Its totient is φ = 21274624.

The previous prime is 55610657. The next prime is 55610693. The reversal of 55610690 is 9601655.

It can be written as a sum of positive squares in 8 ways, for example, as 22857961 + 32752729 = 4781^2 + 5723^2 .

It is a super-2 number, since 2×55610690² = 6185097684552200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55610693) 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, 31922 + ... + 33618.

Almost surely, 2^55610690 is an apocalyptic number.

55610690 is a deficient number, since it is larger than the sum of its proper divisors (48918190).

55610690 is a wasteful number, since it uses less digits than its factorization.

55610690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 55610690 is about 7457.2575388007. The cubic root of 55610690 is about 381.6975988185.

The spelling of 55610690 in words is "fifty-five million, six hundred ten thousand, six hundred ninety".