556565601 has 16 divisors (see below), whose sum is σ = 786240000. Its totient is φ = 348995328.

The previous prime is 556565579. The next prime is 556565623. The reversal of 556565601 is 106565655.

It is an interprime number because it is at equal distance from previous prime (556565579) and next prime (556565623).

It is not a de Polignac number, because 556565601 - 2¹⁹ = 556041313 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 556565601.

It is not an unprimeable number, because it can be changed into a prime (556565671) 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, 120075 + ... + 124623.

It is an arithmetic number, because the mean of its divisors is an integer number (49140000).

Almost surely, 2^556565601 is an apocalyptic number.

556565601 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

556565601 is a deficient number, since it is larger than the sum of its proper divisors (229674399).

556565601 is a wasteful number, since it uses less digits than its factorization.

556565601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6968.

The product of its (nonzero) digits is 135000, while the sum is 39.

The square root of 556565601 is about 23591.6426091953. The cubic root of 556565601 is about 822.5685870811.

It can be divided in two parts, 55 and 6565601, that added together give a palindrome (6565656).

The spelling of 556565601 in words is "five hundred fifty-six million, five hundred sixty-five thousand, six hundred one".