55786446 has 48 divisors (see below), whose sum is σ = 123832800. Its totient is φ = 18146304.

The previous prime is 55786433. The next prime is 55786463. The reversal of 55786446 is 64468755.

It is a super-2 number, since 2×55786446² = 6224255114621832, 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 23 ways as a sum of consecutive naturals, for example, 155215 + ... + 155573.

It is an arithmetic number, because the mean of its divisors is an integer number (2579850).

Almost surely, 2^55786446 is an apocalyptic number.

55786446 is an abundant number, since it is smaller than the sum of its proper divisors (68046354).

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

55786446 is a wasteful number, since it uses less digits than its factorization.

55786446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553 (or 550 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 55786446 is about 7469.0324674619. The cubic root of 55786446 is about 382.0992907290.

The spelling of 55786446 in words is "fifty-five million, seven hundred eighty-six thousand, four hundred forty-six".