556190391 has 16 divisors (see below), whose sum is σ = 770536800. Its totient is φ = 356431488.

The previous prime is 556190381. The next prime is 556190413. The reversal of 556190391 is 193091655.

556190391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 556190391 - 2⁷ = 556190263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556190311) 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, 5965 + ... + 33881.

It is an arithmetic number, because the mean of its divisors is an integer number (48158550).

Almost surely, 2^556190391 is an apocalyptic number.

556190391 is a deficient number, since it is larger than the sum of its proper divisors (214346409).

556190391 is a wasteful number, since it uses less digits than its factorization.

556190391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28178.

The product of its (nonzero) digits is 36450, while the sum is 39.

The square root of 556190391 is about 23583.6890880117. The cubic root of 556190391 is about 822.3837000160.

The spelling of 556190391 in words is "five hundred fifty-six million, one hundred ninety thousand, three hundred ninety-one".