556617401 has 4 divisors (see below), whose sum is σ = 556676352. Its totient is φ = 556558452.

The previous prime is 556617389. The next prime is 556617403. The reversal of 556617401 is 104716655.

556617401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 556617401 - 2⁶ = 556617337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556617403) 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, 11765 + ... + 35378.

It is an arithmetic number, because the mean of its divisors is an integer number (139169088).

Almost surely, 2^556617401 is an apocalyptic number.

It is an amenable number.

556617401 is a deficient number, since it is larger than the sum of its proper divisors (58951).

556617401 is a wasteful number, since it uses less digits than its factorization.

556617401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58950.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 556617401 is about 23592.7404300560. The cubic root of 556617401 is about 822.5941053254.

The spelling of 556617401 in words is "five hundred fifty-six million, six hundred seventeen thousand, four hundred one".