55649556 has 36 divisors (see below), whose sum is σ = 148075200. Its totient is φ = 17573328.

The previous prime is 55649543. The next prime is 55649599. The reversal of 55649556 is 65594655.

55649556 is a `hidden beast` number, since 5 + 56 + 49 + 556 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39996 + ... + 41363.

It is an arithmetic number, because the mean of its divisors is an integer number (4113200).

Almost surely, 2^55649556 is an apocalyptic number.

It is an amenable number.

55649556 is an abundant number, since it is smaller than the sum of its proper divisors (92425644).

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

55649556 is a wasteful number, since it uses less digits than its factorization.

55649556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81388 (or 81383 counting only the distinct ones).

The product of its digits is 810000, while the sum is 45.

The square root of 55649556 is about 7459.8630014230. The cubic root of 55649556 is about 381.7865002160.

The spelling of 55649556 in words is "fifty-five million, six hundred forty-nine thousand, five hundred fifty-six".