556456139 has 4 divisors (see below), whose sum is σ = 558032856. Its totient is φ = 554879424.

The previous prime is 556456133. The next prime is 556456157. The reversal of 556456139 is 931654655.

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

It is a cyclic number.

It is not a de Polignac number, because 556456139 - 2²⁸ = 288020683 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 556456139.

It is not an unprimeable number, because it can be changed into a prime (556456133) 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, 787829 + ... + 788534.

It is an arithmetic number, because the mean of its divisors is an integer number (139508214).

Almost surely, 2^556456139 is an apocalyptic number.

556456139 is a deficient number, since it is larger than the sum of its proper divisors (1576717).

556456139 is a wasteful number, since it uses less digits than its factorization.

556456139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1576716.

The product of its digits is 486000, while the sum is 44.

The square root of 556456139 is about 23589.3225633972. The cubic root of 556456139 is about 822.5146575856.

The spelling of 556456139 in words is "five hundred fifty-six million, four hundred fifty-six thousand, one hundred thirty-nine".