56038139 has 4 divisors (see below), whose sum is σ = 56062056. Its totient is φ = 56014224.

The previous prime is 56038123. The next prime is 56038153. The reversal of 56038139 is 93183065.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93183065 = 5 ⋅18636613.

It is a cyclic number.

It is not a de Polignac number, because 56038139 - 2⁴ = 56038123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56038099 and 56038108.

It is not an unprimeable number, because it can be changed into a prime (56038109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8009 + ... + 13274.

It is an arithmetic number, because the mean of its divisors is an integer number (14015514).

Almost surely, 2^56038139 is an apocalyptic number.

56038139 is a deficient number, since it is larger than the sum of its proper divisors (23917).

56038139 is a wasteful number, since it uses less digits than its factorization.

56038139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23916.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 56038139 is about 7485.8626089449. The cubic root of 56038139 is about 382.6730707521.

The spelling of 56038139 in words is "fifty-six million, thirty-eight thousand, one hundred thirty-nine".