556305245 has 4 divisors (see below), whose sum is σ = 667566300. Its totient is φ = 445044192.

The previous prime is 556305193. The next prime is 556305247. The reversal of 556305245 is 542503655.

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

It can be written as a sum of positive squares in 2 ways, for example, as 214388164 + 341917081 = 14642^2 + 18491^2 .

It is a cyclic number.

It is not a de Polignac number, because 556305245 - 2²⁴ = 539528029 is a prime.

It is a super-2 number, since 2×556305245² = 618951051229020050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556305247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55630520 + ... + 55630529.

It is an arithmetic number, because the mean of its divisors is an integer number (166891575).

Almost surely, 2^556305245 is an apocalyptic number.

It is an amenable number.

556305245 is a deficient number, since it is larger than the sum of its proper divisors (111261055).

556305245 is a wasteful number, since it uses less digits than its factorization.

556305245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111261054.

The product of its (nonzero) digits is 90000, while the sum is 35.

The square root of 556305245 is about 23586.1239927208. The cubic root of 556305245 is about 822.4403038686.

The spelling of 556305245 in words is "five hundred fifty-six million, three hundred five thousand, two hundred forty-five".