55785524 has 12 divisors (see below), whose sum is σ = 97676964. Its totient is φ = 27877824.

The previous prime is 55785497. The next prime is 55785547. The reversal of 55785524 is 42558755.

It can be written as a sum of positive squares in 2 ways, for example, as 1909924 + 53875600 = 1382^2 + 7340^2 .

It is a super-2 number, since 2×55785524² = 6224049375909152, which contains 22 as substring.

It is a congruent number.

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, 12794 + ... + 16590.

It is an arithmetic number, because the mean of its divisors is an integer number (8139747).

Almost surely, 2^55785524 is an apocalyptic number.

It is an amenable number.

55785524 is a deficient number, since it is larger than the sum of its proper divisors (41891440).

55785524 is a wasteful number, since it uses less digits than its factorization.

55785524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7474 (or 7472 counting only the distinct ones).

The product of its digits is 280000, while the sum is 41.

The square root of 55785524 is about 7468.9707456918. The cubic root of 55785524 is about 382.0971856927.

The spelling of 55785524 in words is "fifty-five million, seven hundred eighty-five thousand, five hundred twenty-four".