55572426 has 128 divisors (see below), whose sum is σ = 156119040. Its totient is φ = 14261184.

The previous prime is 55572373. The next prime is 55572443. The reversal of 55572426 is 62427555.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 211171 + ... + 211433.

It is an arithmetic number, because the mean of its divisors is an integer number (1219680).

Almost surely, 2^55572426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55572426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78059520).

55572426 is an abundant number, since it is smaller than the sum of its proper divisors (100546614).

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

55572426 is a wasteful number, since it uses less digits than its factorization.

55572426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337 (or 331 counting only the distinct ones).

The product of its digits is 84000, while the sum is 36.

The square root of 55572426 is about 7454.6915429144. The cubic root of 55572426 is about 381.6100339516.

The spelling of 55572426 in words is "fifty-five million, five hundred seventy-two thousand, four hundred twenty-six".