556973478 has 24 divisors (see below), whose sum is σ = 1248390000. Its totient is φ = 179255664.

The previous prime is 556973447. The next prime is 556973509. The reversal of 556973478 is 874379655.

556973478 is a `hidden beast` number, since 5 + 569 + 7 + 3 + 4 + 78 = 666.

556973478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (556973447) and next prime (556973509).

It is a super-4 number, since 4×556973478⁴ (a number of 36 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 532978 + ... + 534021.

It is an arithmetic number, because the mean of its divisors is an integer number (52016250).

Almost surely, 2^556973478 is an apocalyptic number.

556973478 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

556973478 is an abundant number, since it is smaller than the sum of its proper divisors (691416522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

556973478 is a wasteful number, since it uses less digits than its factorization.

556973478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067036 (or 1067033 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 54.

The square root of 556973478 is about 23600.2855491200. The cubic root of 556973478 is about 822.7694767768.

The spelling of 556973478 in words is "five hundred fifty-six million, nine hundred seventy-three thousand, four hundred seventy-eight".