55785504 has 24 divisors (see below), whose sum is σ = 146437200. Its totient is φ = 18595136.

The previous prime is 55785497. The next prime is 55785547. The reversal of 55785504 is 40558755.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×55785504² = 6224044913068032, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290454 + ... + 290645.

It is an arithmetic number, because the mean of its divisors is an integer number (6101550).

Almost surely, 2^55785504 is an apocalyptic number.

It is an amenable number.

55785504 is an abundant number, since it is smaller than the sum of its proper divisors (90651696).

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

55785504 is a wasteful number, since it uses less digits than its factorization.

55785504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581112 (or 581104 counting only the distinct ones).

The product of its (nonzero) digits is 140000, while the sum is 39.

The square root of 55785504 is about 7468.9694068191. The cubic root of 55785504 is about 382.0971400300.

The spelling of 55785504 in words is "fifty-five million, seven hundred eighty-five thousand, five hundred four".