159962591 has 2 divisors, whose sum is σ = 159962592. Its totient is φ = 159962590.

The previous prime is 159962531. The next prime is 159962609. The reversal of 159962591 is 195269951.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 159962591 - 2¹⁸ = 159700447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159962531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79981295 + 79981296.

It is an arithmetic number, because the mean of its divisors is an integer number (79981296).

Almost surely, 2^159962591 is an apocalyptic number.

159962591 is a deficient number, since it is larger than the sum of its proper divisors (1).

159962591 is an equidigital number, since it uses as much as digits as its factorization.

159962591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 218700, while the sum is 47.

The square root of 159962591 is about 12647.6318336675. The cubic root of 159962591 is about 542.8412101675.

The spelling of 159962591 in words is "one hundred fifty-nine million, nine hundred sixty-two thousand, five hundred ninety-one".