55611642 has 32 divisors (see below), whose sum is σ = 114301440. Its totient is φ = 18028080.

The previous prime is 55611637. The next prime is 55611643. The reversal of 55611642 is 24611655.

It is not an unprimeable number, because it can be changed into a prime (55611643) 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, 113017 + ... + 113507.

It is an arithmetic number, because the mean of its divisors is an integer number (3571920).

Almost surely, 2^55611642 is an apocalyptic number.

55611642 is an abundant number, since it is smaller than the sum of its proper divisors (58689798).

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

55611642 is a wasteful number, since it uses less digits than its factorization.

55611642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978.

The product of its digits is 7200, while the sum is 30.

The square root of 55611642 is about 7457.3213689635. The cubic root of 55611642 is about 381.6997769012.

The spelling of 55611642 in words is "fifty-five million, six hundred eleven thousand, six hundred forty-two".