55611684 has 30 divisors (see below), whose sum is σ = 145380774. Its totient is φ = 18537120.

The previous prime is 55611683. The next prime is 55611697. The reversal of 55611684 is 48611655.

55611684 is a `hidden beast` number, since 5 + 561 + 16 + 84 = 666.

It can be written as a sum of positive squares in only one way, i.e., 43164900 + 12446784 = 6570^2 + 3528^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (55611683) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 85497 + ... + 86144.

Almost surely, 2^55611684 is an apocalyptic number.

55611684 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

55611684 is an abundant number, since it is smaller than the sum of its proper divisors (89769090).

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

55611684 is a wasteful number, since it uses less digits than its factorization.

55611684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171657 (or 171646 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 55611684 is about 7457.3241849875. The cubic root of 55611684 is about 381.6998729925.

The spelling of 55611684 in words is "fifty-five million, six hundred eleven thousand, six hundred eighty-four".