559391381 has 2 divisors, whose sum is σ = 559391382. Its totient is φ = 559391380.

The previous prime is 559391377. The next prime is 559391447. The reversal of 559391381 is 183193955.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 556535281 + 2856100 = 23591^2 + 1690^2 .

It is a cyclic number.

It is not a de Polignac number, because 559391381 - 2² = 559391377 is a prime.

It is a super-2 number, since 2×559391381² = 625837434274174322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (559391081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 279695690 + 279695691.

It is an arithmetic number, because the mean of its divisors is an integer number (279695691).

Almost surely, 2^559391381 is an apocalyptic number.

It is an amenable number.

559391381 is a deficient number, since it is larger than the sum of its proper divisors (1).

559391381 is an equidigital number, since it uses as much as digits as its factorization.

559391381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145800, while the sum is 44.

The square root of 559391381 is about 23651.4562130961. The cubic root of 559391381 is about 823.9583454648.

The spelling of 559391381 in words is "five hundred fifty-nine million, three hundred ninety-one thousand, three hundred eighty-one".