556165401 has 16 divisors (see below), whose sum is σ = 809369280. Its totient is φ = 336902720.

The previous prime is 556165391. The next prime is 556165439. The reversal of 556165401 is 104561655.

It is not a de Polignac number, because 556165401 - 2¹⁰ = 556164377 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (556165481) 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, 109351 + ... + 114323.

It is an arithmetic number, because the mean of its divisors is an integer number (50585580).

Almost surely, 2^556165401 is an apocalyptic number.

It is an amenable number.

556165401 is a deficient number, since it is larger than the sum of its proper divisors (253203879).

556165401 is a wasteful number, since it uses less digits than its factorization.

556165401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8376.

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 556165401 is about 23583.1592667310. The cubic root of 556165401 is about 822.3713830848.

The spelling of 556165401 in words is "five hundred fifty-six million, one hundred sixty-five thousand, four hundred one".