55949131 has 8 divisors (see below), whose sum is σ = 65247200. Its totient is φ = 47956104.

The previous prime is 55949119. The next prime is 55949147. The reversal of 55949131 is 13194955.

It is a happy number.

It is not a de Polignac number, because 55949131 - 2⁵ = 55949099 is a prime.

It is a super-2 number, since 2×55949131² = 6260610519310322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55949191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81216 + ... + 81901.

It is an arithmetic number, because the mean of its divisors is an integer number (8155900).

Almost surely, 2^55949131 is an apocalyptic number.

55949131 is a deficient number, since it is larger than the sum of its proper divisors (9298069).

55949131 is an equidigital number, since it uses as much as digits as its factorization.

55949131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163138 (or 163124 counting only the distinct ones).

The product of its digits is 24300, while the sum is 37.

The square root of 55949131 is about 7479.9151733158. The cubic root of 55949131 is about 382.4703575360.

The spelling of 55949131 in words is "fifty-five million, nine hundred forty-nine thousand, one hundred thirty-one".