55620925 has 6 divisors (see below), whose sum is σ = 68969978. Its totient is φ = 44496720.

The previous prime is 55620907. The next prime is 55620931. The reversal of 55620925 is 52902655.

It can be written as a sum of positive squares in 3 ways, for example, as 15539364 + 40081561 = 3942^2 + 6331^2 .

It is not a de Polignac number, because 55620925 - 2²¹ = 53523773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1112394 + ... + 1112443.

Almost surely, 2^55620925 is an apocalyptic number.

It is an amenable number.

55620925 is a deficient number, since it is larger than the sum of its proper divisors (13349053).

55620925 is a wasteful number, since it uses less digits than its factorization.

55620925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224847 (or 2224842 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 55620925 is about 7457.9437514639. The cubic root of 55620925 is about 381.7210141923.

The spelling of 55620925 in words is "fifty-five million, six hundred twenty thousand, nine hundred twenty-five".