556318201 has 4 divisors (see below), whose sum is σ = 561826404. Its totient is φ = 550810000.

The previous prime is 556318187. The next prime is 556318211. The reversal of 556318201 is 102813655.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 226532601 + 329785600 = 15051^2 + 18160^2 .

It is a cyclic number.

It is not a de Polignac number, because 556318201 - 2⁷ = 556318073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556318211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2753950 + ... + 2754151.

It is an arithmetic number, because the mean of its divisors is an integer number (140456601).

Almost surely, 2^556318201 is an apocalyptic number.

It is an amenable number.

556318201 is a deficient number, since it is larger than the sum of its proper divisors (5508203).

556318201 is a wasteful number, since it uses less digits than its factorization.

556318201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5508202.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 556318201 is about 23586.3986441339. The cubic root of 556318201 is about 822.4466885252.

The spelling of 556318201 in words is "five hundred fifty-six million, three hundred eighteen thousand, two hundred one".