556240761 has 24 divisors (see below), whose sum is σ = 821655744. Its totient is φ = 362504160.

The previous prime is 556240759. The next prime is 556240813. The reversal of 556240761 is 167042655.

It is a happy number.

556240761 is a `hidden beast` number, since 556 + 2 + 40 + 7 + 61 = 666.

It is not a de Polignac number, because 556240761 - 2¹ = 556240759 is a prime.

It is not an unprimeable number, because it can be changed into a prime (556240661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88650 + ... + 94716.

It is an arithmetic number, because the mean of its divisors is an integer number (34235656).

Almost surely, 2^556240761 is an apocalyptic number.

It is an amenable number.

556240761 is a deficient number, since it is larger than the sum of its proper divisors (265414983).

556240761 is a wasteful number, since it uses less digits than its factorization.

556240761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6301 (or 6298 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 556240761 is about 23584.7569629199. The cubic root of 556240761 is about 822.4085249784.

The spelling of 556240761 in words is "five hundred fifty-six million, two hundred forty thousand, seven hundred sixty-one".