55575525 has 12 divisors (see below), whose sum is σ = 91884992. Its totient is φ = 29640240.

The previous prime is 55575523. The next prime is 55575563. The reversal of 55575525 is 52557555.

It is a happy number.

It is not a de Polignac number, because 55575525 - 2¹ = 55575523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55575523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 370429 + ... + 370578.

Almost surely, 2^55575525 is an apocalyptic number.

It is an amenable number.

55575525 is a deficient number, since it is larger than the sum of its proper divisors (36309467).

55575525 is a wasteful number, since it uses less digits than its factorization.

55575525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741020 (or 741015 counting only the distinct ones).

The product of its digits is 218750, while the sum is 39.

The square root of 55575525 is about 7454.8993956994. The cubic root of 55575525 is about 381.6171273226.

The spelling of 55575525 in words is "fifty-five million, five hundred seventy-five thousand, five hundred twenty-five".