55561710 has 16 divisors (see below), whose sum is σ = 133348176. Its totient is φ = 14816448.

The previous prime is 55561699. The next prime is 55561711. The reversal of 55561710 is 1716555.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 1852057 = 55561710 / (5 + 5 + 5 + 6 + 1 + 7 + 1 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55561711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 925999 + ... + 926058.

It is an arithmetic number, because the mean of its divisors is an integer number (8334261).

Almost surely, 2^55561710 is an apocalyptic number.

55561710 is an abundant number, since it is smaller than the sum of its proper divisors (77786466).

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

55561710 is a wasteful number, since it uses less digits than its factorization.

55561710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852067.

The product of its (nonzero) digits is 5250, while the sum is 30.

The square root of 55561710 is about 7453.9727662502. The cubic root of 55561710 is about 381.5855038246.

The spelling of 55561710 in words is "fifty-five million, five hundred sixty-one thousand, seven hundred ten".