55690572 has 96 divisors (see below), whose sum is σ = 160151040. Its totient is φ = 14699520.

The previous prime is 55690571. The next prime is 55690597. The reversal of 55690572 is 27509655.

It is a self number, because there is not a number n which added to its sum of digits gives 55690572.

It is not an unprimeable number, because it can be changed into a prime (55690571) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83922 + ... + 84582.

It is an arithmetic number, because the mean of its divisors is an integer number (1668240).

Almost surely, 2^55690572 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55690572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80075520).

55690572 is an abundant number, since it is smaller than the sum of its proper divisors (104460468).

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

55690572 is a wasteful number, since it uses less digits than its factorization.

55690572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751 (or 749 counting only the distinct ones).

The product of its (nonzero) digits is 94500, while the sum is 39.

The square root of 55690572 is about 7462.6116072056. The cubic root of 55690572 is about 381.8802746059.

The spelling of 55690572 in words is "fifty-five million, six hundred ninety thousand, five hundred seventy-two".