559249921 has 2 divisors, whose sum is σ = 559249922. Its totient is φ = 559249920.

The previous prime is 559249913. The next prime is 559249939. The reversal of 559249921 is 129942955.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 431808400 + 127441521 = 20780^2 + 11289^2 .

It is a cyclic number.

It is not a de Polignac number, because 559249921 - 2³ = 559249913 is a prime.

It is not a weakly prime, because it can be changed into another prime (559249121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 279624960 + 279624961.

It is an arithmetic number, because the mean of its divisors is an integer number (279624961).

Almost surely, 2^559249921 is an apocalyptic number.

It is an amenable number.

559249921 is a deficient number, since it is larger than the sum of its proper divisors (1).

559249921 is an equidigital number, since it uses as much as digits as its factorization.

559249921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 291600, while the sum is 46.

The square root of 559249921 is about 23648.4655104723. The cubic root of 559249921 is about 823.8888848701. Note that the first 5 decimals are identical.

The spelling of 559249921 in words is "five hundred fifty-nine million, two hundred forty-nine thousand, nine hundred twenty-one".