556815245 has 16 divisors (see below), whose sum is σ = 766920960. Its totient is φ = 380171904.

The previous prime is 556815221. The next prime is 556815253. The reversal of 556815245 is 542518655.

It is a de Polignac number, because none of the positive numbers 2^k-556815245 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25985 + ... + 42294.

It is an arithmetic number, because the mean of its divisors is an integer number (47932560).

Almost surely, 2^556815245 is an apocalyptic number.

It is an amenable number.

556815245 is a deficient number, since it is larger than the sum of its proper divisors (210105715).

556815245 is a wasteful number, since it uses less digits than its factorization.

556815245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68524.

The product of its digits is 240000, while the sum is 41.

The square root of 556815245 is about 23596.9329574841. The cubic root of 556815245 is about 822.6915546863.

The spelling of 556815245 in words is "five hundred fifty-six million, eight hundred fifteen thousand, two hundred forty-five".