55878974 has 4 divisors (see below), whose sum is σ = 83818464. Its totient is φ = 27939486.

The previous prime is 55878947. The next prime is 55878997. The reversal of 55878974 is 47987855.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13969742 + ... + 13969745.

It is an arithmetic number, because the mean of its divisors is an integer number (20954616).

Almost surely, 2^55878974 is an apocalyptic number.

55878974 is a deficient number, since it is larger than the sum of its proper divisors (27939490).

55878974 is a wasteful number, since it uses less digits than its factorization.

55878974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27939489.

The product of its digits is 2822400, while the sum is 53.

The square root of 55878974 is about 7475.2240100214. The cubic root of 55878974 is about 382.3104253745.

The spelling of 55878974 in words is "fifty-five million, eight hundred seventy-eight thousand, nine hundred seventy-four".