56461139 has 4 divisors (see below), whose sum is σ = 64527024. Its totient is φ = 48395256.

The previous prime is 56461127. The next prime is 56461151. The reversal of 56461139 is 93116465.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (56461127) and next prime (56461151).

It is not a de Polignac number, because 56461139 - 2²⁰ = 55412563 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56461099 and 56461108.

It is not an unprimeable number, because it can be changed into a prime (56461109) 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, 4032932 + ... + 4032945.

It is an arithmetic number, because the mean of its divisors is an integer number (16131756).

Almost surely, 2^56461139 is an apocalyptic number.

56461139 is a deficient number, since it is larger than the sum of its proper divisors (8065885).

56461139 is an equidigital number, since it uses as much as digits as its factorization.

56461139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8065884.

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

The square root of 56461139 is about 7514.0627492722. The cubic root of 56461139 is about 383.6335185313.

The spelling of 56461139 in words is "fifty-six million, four hundred sixty-one thousand, one hundred thirty-nine".