55505610 has 24 divisors (see below), whose sum is σ = 144314820. Its totient is φ = 14801472.

The previous prime is 55505609. The next prime is 55505621. The reversal of 55505610 is 1650555.

55505610 is a `hidden beast` number, since 55 + 50 + 561 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 51108201 + 4397409 = 7149^2 + 2097^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 308275 + ... + 308454.

Almost surely, 2^55505610 is an apocalyptic number.

55505610 is an abundant number, since it is smaller than the sum of its proper divisors (88809210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55505610 is a wasteful number, since it uses less digits than its factorization.

55505610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616742 (or 616739 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 55505610 is about 7450.2087219084. The cubic root of 55505610 is about 381.4570331230.

The spelling of 55505610 in words is "fifty-five million, five hundred five thousand, six hundred ten".