556949385 has 16 divisors (see below), whose sum is σ = 990132480. Its totient is φ = 297039600.

The previous prime is 556949381. The next prime is 556949411. The reversal of 556949385 is 583949655.

It is a happy number.

556949385 is a `hidden beast` number, since 5 + 569 + 49 + 38 + 5 = 666.

It is not a de Polignac number, because 556949385 - 2² = 556949381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (556949381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2062641 + ... + 2062910.

It is an arithmetic number, because the mean of its divisors is an integer number (61883280).

Almost surely, 2^556949385 is an apocalyptic number.

It is an amenable number.

556949385 is a deficient number, since it is larger than the sum of its proper divisors (433183095).

556949385 is a wasteful number, since it uses less digits than its factorization.

556949385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4125565 (or 4125559 counting only the distinct ones).

The product of its digits is 5832000, while the sum is 54.

The square root of 556949385 is about 23599.7751048606. The cubic root of 556949385 is about 822.7576130935.

The spelling of 556949385 in words is "five hundred fifty-six million, nine hundred forty-nine thousand, three hundred eighty-five".