556422087 has 32 divisors (see below), whose sum is σ = 890507520. Its totient is φ = 305303040.

The previous prime is 556422073. The next prime is 556422089. The reversal of 556422087 is 780224655.

It is not a de Polignac number, because 556422087 - 2¹² = 556417991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556422089) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9489 + ... + 34682.

It is an arithmetic number, because the mean of its divisors is an integer number (27828360).

Almost surely, 2^556422087 is an apocalyptic number.

556422087 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

556422087 is a deficient number, since it is larger than the sum of its proper divisors (334085433).

556422087 is a wasteful number, since it uses less digits than its factorization.

556422087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44223.

The product of its (nonzero) digits is 134400, while the sum is 39.

The square root of 556422087 is about 23588.6007851250. The cubic root of 556422087 is about 822.4978794795.

The spelling of 556422087 in words is "five hundred fifty-six million, four hundred twenty-two thousand, eighty-seven".