556725617 has 4 divisors (see below), whose sum is σ = 636257856. Its totient is φ = 477193380.

The previous prime is 556725613. The next prime is 556725619. The reversal of 556725617 is 716527655.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 556725617 - 2² = 556725613 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556725613) 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, 39766109 + ... + 39766122.

It is an arithmetic number, because the mean of its divisors is an integer number (159064464).

Almost surely, 2^556725617 is an apocalyptic number.

It is an amenable number.

556725617 is a deficient number, since it is larger than the sum of its proper divisors (79532239).

556725617 is an equidigital number, since it uses as much as digits as its factorization.

556725617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79532238.

The product of its digits is 441000, while the sum is 44.

The square root of 556725617 is about 23595.0337359369. The cubic root of 556725617 is about 822.6474106870.

The spelling of 556725617 in words is "five hundred fifty-six million, seven hundred twenty-five thousand, six hundred seventeen".