556346569 has 9 divisors (see below), whose sum is σ = 564264423. Its totient is φ = 548539272.

The previous prime is 556346551. The next prime is 556346611. The reversal of 556346569 is 965643655.

The square root of 556346569 is 23587.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 518154169 + 38192400 = 22763^2 + 6180^2 .

It is not a de Polignac number, because 556346569 - 2⁵ = 556346537 is a prime.

It is a super-2 number, since 2×556346569² = 619043009676143522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556346509) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2429347 + ... + 2429575.

It is an arithmetic number, because the mean of its divisors is an integer number (62696047).

Almost surely, 2^556346569 is an apocalyptic number.

556346569 is the 23587-th square number.

556346569 is the 11794-th centered octagonal number.

It is an amenable number.

556346569 is a deficient number, since it is larger than the sum of its proper divisors (7917854).

556346569 is an frugal number, since it uses more digits than its factorization.

556346569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 332 counting only the distinct ones).

The product of its digits is 2916000, while the sum is 49.

The cubic root of 556346569 is about 822.4606677976.

Multiplying 556346569 by its sum of digits (49), we get a square (27260981881 = 165109²).

The spelling of 556346569 in words is "five hundred fifty-six million, three hundred forty-six thousand, five hundred sixty-nine".