55872538 has 8 divisors (see below), whose sum is σ = 83869632. Its totient is φ = 27915996.

The previous prime is 55872517. The next prime is 55872563. The reversal of 55872538 is 83527855.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×55872538² = 6243481005122888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55872494 and 55872503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6420 + ... + 12367.

It is an arithmetic number, because the mean of its divisors is an integer number (10483704).

Almost surely, 2^55872538 is an apocalyptic number.

55872538 is a deficient number, since it is larger than the sum of its proper divisors (27997094).

55872538 is a wasteful number, since it uses less digits than its factorization.

55872538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20276.

The product of its digits is 336000, while the sum is 43.

The square root of 55872538 is about 7474.7935088536. The cubic root of 55872538 is about 382.2957469591.

The spelling of 55872538 in words is "fifty-five million, eight hundred seventy-two thousand, five hundred thirty-eight".