556190993 has 8 divisors (see below), whose sum is σ = 577644840. Its totient is φ = 535075200.

The previous prime is 556190983. The next prime is 556191017. The reversal of 556190993 is 399091655.

It can be written as a sum of positive squares in 4 ways, for example, as 191075329 + 365115664 = 13823^2 + 19108^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 556190993 - 2⁴ = 556190977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556190923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81158 + ... + 87743.

It is an arithmetic number, because the mean of its divisors is an integer number (72205605).

Almost surely, 2^556190993 is an apocalyptic number.

It is an amenable number.

556190993 is a deficient number, since it is larger than the sum of its proper divisors (21453847).

556190993 is a wasteful number, since it uses less digits than its factorization.

556190993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169027.

The product of its (nonzero) digits is 328050, while the sum is 47.

The square root of 556190993 is about 23583.7018510666. The cubic root of 556190993 is about 822.3839967219.

The spelling of 556190993 in words is "five hundred fifty-six million, one hundred ninety thousand, nine hundred ninety-three".