55617525 has 36 divisors (see below), whose sum is σ = 102063780. Its totient is φ = 28934400.

The previous prime is 55617493. The next prime is 55617559. The reversal of 55617525 is 52571655.

It is a happy number.

55617525 is a `hidden beast` number, since 5 + 561 + 75 + 25 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 1418481 + 54199044 = 1191^2 + 7362^2 .

It is not a de Polignac number, because 55617525 - 2⁵ = 55617493 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55617525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6211 + ... + 12239.

It is an arithmetic number, because the mean of its divisors is an integer number (2835105).

Almost surely, 2^55617525 is an apocalyptic number.

It is an amenable number.

55617525 is a deficient number, since it is larger than the sum of its proper divisors (46446255).

55617525 is a wasteful number, since it uses less digits than its factorization.

55617525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6086 (or 6078 counting only the distinct ones).

The product of its digits is 52500, while the sum is 36.

The square root of 55617525 is about 7457.7158031129. The cubic root of 55617525 is about 381.7132360771.

It can be divided in two parts, 556 and 17525, that added together give a palindrome (18081).

The spelling of 55617525 in words is "fifty-five million, six hundred seventeen thousand, five hundred twenty-five".