55805372 has 48 divisors (see below), whose sum is σ = 114605568. Its totient is φ = 23284800.

The previous prime is 55805369. The next prime is 55805381. The reversal of 55805372 is 27350855.

It is a super-2 number, since 2×55805372² = 6228479088116768, which contains 22 as substring.

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, 283178 + ... + 283374.

It is an arithmetic number, because the mean of its divisors is an integer number (2387616).

Almost surely, 2^55805372 is an apocalyptic number.

It is an amenable number.

55805372 is an abundant number, since it is smaller than the sum of its proper divisors (58800196).

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

55805372 is a wasteful number, since it uses less digits than its factorization.

55805372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 35.

The square root of 55805372 is about 7470.2993246590. The cubic root of 55805372 is about 382.1424959282.

The spelling of 55805372 in words is "fifty-five million, eight hundred five thousand, three hundred seventy-two".