55644525 has 18 divisors (see below), whose sum is σ = 99665930. Its totient is φ = 29676960.

The previous prime is 55644517. The next prime is 55644527. The reversal of 55644525 is 52544655.

55644525 is a `hidden beast` number, since 5 + 5 + 644 + 5 + 2 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 1798281 + 53846244 = 1341^2 + 7338^2 .

It is not a de Polignac number, because 55644525 - 2³ = 55644517 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55644525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55644527) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 123430 + ... + 123879.

Almost surely, 2^55644525 is an apocalyptic number.

It is an amenable number.

55644525 is a deficient number, since it is larger than the sum of its proper divisors (44021405).

55644525 is a wasteful number, since it uses less digits than its factorization.

55644525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247325 (or 247317 counting only the distinct ones).

The product of its digits is 120000, while the sum is 36.

The square root of 55644525 is about 7459.5257892174. The cubic root of 55644525 is about 381.7749947288.

It can be divided in two parts, 55644 and 525, that added together give a square (56169 = 237²).

The spelling of 55644525 in words is "fifty-five million, six hundred forty-four thousand, five hundred twenty-five".