55525131 has 12 divisors (see below), whose sum is σ = 80445352. Its totient is φ = 36904896.

The previous prime is 55525121. The next prime is 55525139. The reversal of 55525131 is 13152555.

55525131 is a `hidden beast` number, since 5 + 5 + 525 + 131 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-55525131 is a prime.

It is a super-2 number, since 2×55525131² = 6166080345134322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55525095 and 55525104.

It is not an unprimeable number, because it can be changed into a prime (55525139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6121 + ... + 12186.

Almost surely, 2^55525131 is an apocalyptic number.

55525131 is a deficient number, since it is larger than the sum of its proper divisors (24920221).

55525131 is a wasteful number, since it uses less digits than its factorization.

55525131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18650 (or 18647 counting only the distinct ones).

The product of its digits is 3750, while the sum is 27.

The square root of 55525131 is about 7451.5187042643. The cubic root of 55525131 is about 381.5017466211.

Adding to 55525131 its reverse (13152555), we get a palindrome (68677686).

The spelling of 55525131 in words is "fifty-five million, five hundred twenty-five thousand, one hundred thirty-one".