56418139 has 2 divisors, whose sum is σ = 56418140. Its totient is φ = 56418138.

The previous prime is 56418119. The next prime is 56418143. The reversal of 56418139 is 93181465.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56418139 - 2¹⁷ = 56287067 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56418098 and 56418107.

It is not a weakly prime, because it can be changed into another prime (56418119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28209069 + 28209070.

It is an arithmetic number, because the mean of its divisors is an integer number (28209070).

Almost surely, 2^56418139 is an apocalyptic number.

56418139 is a deficient number, since it is larger than the sum of its proper divisors (1).

56418139 is an equidigital number, since it uses as much as digits as its factorization.

56418139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 37.

The square root of 56418139 is about 7511.2009026520. The cubic root of 56418139 is about 383.5361038544.

The spelling of 56418139 in words is "fifty-six million, four hundred eighteen thousand, one hundred thirty-nine".