556454555401 has 4 divisors (see below), whose sum is σ = 556612060932. Its totient is φ = 556297049872.

The previous prime is 556454555347. The next prime is 556454555411. The reversal of 556454555401 is 104555454655.

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 218369290000 + 338085265401 = 467300^2 + 581451^2 .

It is a cyclic number.

It is not a de Polignac number, because 556454555401 - 2²⁷ = 556320337673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556454555411) 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, 78747466 + ... + 78754531.

It is an arithmetic number, because the mean of its divisors is an integer number (139153015233).

Almost surely, 2^556454555401 is an apocalyptic number.

It is an amenable number.

556454555401 is a deficient number, since it is larger than the sum of its proper divisors (157505531).

556454555401 is a wasteful number, since it uses less digits than its factorization.

556454555401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157505530.

The product of its (nonzero) digits is 6000000, while the sum is 49.

The spelling of 556454555401 in words is "five hundred fifty-six billion, four hundred fifty-four million, five hundred fifty-five thousand, four hundred one".