55131039 has 6 divisors (see below), whose sum is σ = 79633736. Its totient is φ = 36754020.

The previous prime is 55130981. The next prime is 55131049. The reversal of 55131039 is 93013155.

55131039 is a `hidden beast` number, since 551 + 3 + 103 + 9 = 666.

It is not a de Polignac number, because 55131039 - 2²³ = 46742431 is a prime.

It is a super-2 number, since 2×55131039² = 6078862922439042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55131049) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3062827 + ... + 3062844.

Almost surely, 2^55131039 is an apocalyptic number.

55131039 is a deficient number, since it is larger than the sum of its proper divisors (24502697).

55131039 is a wasteful number, since it uses less digits than its factorization.

55131039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6125677 (or 6125674 counting only the distinct ones).

The product of its (nonzero) digits is 2025, while the sum is 27.

The square root of 55131039 is about 7425.0278787355. The cubic root of 55131039 is about 380.5970278003.

The spelling of 55131039 in words is "fifty-five million, one hundred thirty-one thousand, thirty-nine".