55613268 has 36 divisors (see below), whose sum is σ = 140812308. Its totient is φ = 18506880.

The previous prime is 55613263. The next prime is 55613281. The reversal of 55613268 is 86231655.

55613268 is a `hidden beast` number, since 5 + 561 + 32 + 68 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 33315984 + 22297284 = 5772^2 + 4722^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55613263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33498 + ... + 35118.

It is an arithmetic number, because the mean of its divisors is an integer number (3911453).

Almost surely, 2^55613268 is an apocalyptic number.

It is an amenable number.

55613268 is an abundant number, since it is smaller than the sum of its proper divisors (85199040).

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

55613268 is a wasteful number, since it uses less digits than its factorization.

55613268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2584 (or 2579 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 55613268 is about 7457.4303885454. The cubic root of 55613268 is about 381.7034969723.

It can be divided in two parts, 556 and 13268, that added together give a cube (13824 = 24³).

The spelling of 55613268 in words is "fifty-five million, six hundred thirteen thousand, two hundred sixty-eight".