559163921 has 2 divisors, whose sum is σ = 559163922. Its totient is φ = 559163920.

The previous prime is 559163911. The next prime is 559163951. The reversal of 559163921 is 129361955.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 475240000 + 83923921 = 21800^2 + 9161^2 .

It is a cyclic number.

It is not a de Polignac number, because 559163921 - 2²² = 554969617 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (559163911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 279581960 + 279581961.

It is an arithmetic number, because the mean of its divisors is an integer number (279581961).

Almost surely, 2^559163921 is an apocalyptic number.

It is an amenable number.

559163921 is a deficient number, since it is larger than the sum of its proper divisors (1).

559163921 is an equidigital number, since it uses as much as digits as its factorization.

559163921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72900, while the sum is 41.

The square root of 559163921 is about 23646.6471407682. The cubic root of 559163921 is about 823.8466508743.

The spelling of 559163921 in words is "five hundred fifty-nine million, one hundred sixty-three thousand, nine hundred twenty-one".