556004945 has 4 divisors (see below), whose sum is σ = 667205940. Its totient is φ = 444803952.

The previous prime is 556004887. The next prime is 556004959. The reversal of 556004945 is 549400655.

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 305131024 + 250873921 = 17468^2 + 15839^2 .

It is a cyclic number.

It is not a de Polignac number, because 556004945 - 2²⁴ = 539227729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 556004899 and 556004908.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55600490 + ... + 55600499.

It is an arithmetic number, because the mean of its divisors is an integer number (166801485).

Almost surely, 2^556004945 is an apocalyptic number.

It is an amenable number.

556004945 is a deficient number, since it is larger than the sum of its proper divisors (111200995).

556004945 is a wasteful number, since it uses less digits than its factorization.

556004945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111200994.

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 556004945 is about 23579.7571022265. The cubic root of 556004945 is about 822.2922896387.

The spelling of 556004945 in words is "five hundred fifty-six million, four thousand, nine hundred forty-five".