55561610 has 64 divisors (see below), whose sum is σ = 117863424. Its totient is φ = 18662400.

The previous prime is 55561609. The next prime is 55561619. The reversal of 55561610 is 1616555.

It is not an unprimeable number, because it can be changed into a prime (55561619) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68105 + ... + 68915.

It is an arithmetic number, because the mean of its divisors is an integer number (1841616).

Almost surely, 2^55561610 is an apocalyptic number.

55561610 is an abundant number, since it is smaller than the sum of its proper divisors (62301814).

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

55561610 is a wasteful number, since it uses less digits than its factorization.

55561610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 55561610 is about 7453.9660584148. The cubic root of 55561610 is about 381.5852748985.

The spelling of 55561610 in words is "fifty-five million, five hundred sixty-one thousand, six hundred ten".