556478878 has 16 divisors (see below), whose sum is σ = 880992000. Its totient is φ = 262892952.

The previous prime is 556478869. The next prime is 556478887. The reversal of 556478878 is 878874655.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (556478869) and next prime (556478887).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4918 + ... + 33721.

It is an arithmetic number, because the mean of its divisors is an integer number (55062000).

Almost surely, 2^556478878 is an apocalyptic number.

556478878 is a deficient number, since it is larger than the sum of its proper divisors (324513122).

556478878 is a wasteful number, since it uses less digits than its factorization.

556478878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39039.

The product of its digits is 15052800, while the sum is 58.

The square root of 556478878 is about 23589.8045350105. The cubic root of 556478878 is about 822.5258611677.

The spelling of 556478878 in words is "five hundred fifty-six million, four hundred seventy-eight thousand, eight hundred seventy-eight".