55525149 has 16 divisors (see below), whose sum is σ = 82992000. Its totient is φ = 36687168.

The previous prime is 55525147. The next prime is 55525157. The reversal of 55525149 is 94152555.

It is not a de Polignac number, because 55525149 - 2¹ = 55525147 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55525147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6049 + ... + 12150.

It is an arithmetic number, because the mean of its divisors is an integer number (5187000).

Almost surely, 2^55525149 is an apocalyptic number.

It is an amenable number.

55525149 is a deficient number, since it is larger than the sum of its proper divisors (27466851).

55525149 is a wasteful number, since it uses less digits than its factorization.

55525149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18321 (or 18315 counting only the distinct ones).

The product of its digits is 45000, while the sum is 36.

The square root of 55525149 is about 7451.5199120716. The cubic root of 55525149 is about 381.5017878459.

It can be divided in two parts, 5552 and 5149, that added together give a palindrome (10701).

The spelling of 55525149 in words is "fifty-five million, five hundred twenty-five thousand, one hundred forty-nine".