55819974 has 32 divisors (see below), whose sum is σ = 128791296. Its totient is φ = 15798240.

The previous prime is 55819963. The next prime is 55819997. The reversal of 55819974 is 47991855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1717 + ... + 10704.

It is an arithmetic number, because the mean of its divisors is an integer number (4024728).

Almost surely, 2^55819974 is an apocalyptic number.

55819974 is an abundant number, since it is smaller than the sum of its proper divisors (72971322).

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

55819974 is a wasteful number, since it uses less digits than its factorization.

55819974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12540.

The product of its digits is 453600, while the sum is 48.

The square root of 55819974 is about 7471.2765977442. The cubic root of 55819974 is about 382.1758234133.

The spelling of 55819974 in words is "fifty-five million, eight hundred nineteen thousand, nine hundred seventy-four".