55679724 has 30 divisors (see below), whose sum is σ = 145558644. Its totient is φ = 18559800.

The previous prime is 55679719. The next prime is 55679731. The reversal of 55679724 is 42797655.

55679724 is a `hidden beast` number, since 556 + 7 + 97 + 2 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 55679724.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 85602 + ... + 86249.

Almost surely, 2^55679724 is an apocalyptic number.

55679724 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

55679724 is an abundant number, since it is smaller than the sum of its proper divisors (89878920).

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

55679724 is a wasteful number, since it uses less digits than its factorization.

55679724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171867 (or 171856 counting only the distinct ones).

The product of its digits is 529200, while the sum is 45.

The square root of 55679724 is about 7461.8847485069. The cubic root of 55679724 is about 381.8554774330.

The spelling of 55679724 in words is "fifty-five million, six hundred seventy-nine thousand, seven hundred twenty-four".