55878464 has 28 divisors (see below), whose sum is σ = 111710724. Its totient is φ = 27730944.

The previous prime is 55878437. The next prime is 55878479. The reversal of 55878464 is 46487855.

It can be written as a sum of positive squares in 2 ways, for example, as 39942400 + 15936064 = 6320^2 + 3992^2 .

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, 5582 + ... + 11954.

Almost surely, 2^55878464 is an apocalyptic number.

It is an amenable number.

55878464 is a deficient number, since it is larger than the sum of its proper divisors (55832260).

55878464 is a wasteful number, since it uses less digits than its factorization.

55878464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6522 (or 6512 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 47.

The square root of 55878464 is about 7475.1898972534. The cubic root of 55878464 is about 382.3092622721.

The spelling of 55878464 in words is "fifty-five million, eight hundred seventy-eight thousand, four hundred sixty-four".