159274561 has 2 divisors, whose sum is σ = 159274562. Its totient is φ = 159274560.

The previous prime is 159274519. The next prime is 159274567. The reversal of 159274561 is 165472951.

159274561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145443600 + 13830961 = 12060^2 + 3719^2 .

It is a cyclic number.

It is not a de Polignac number, because 159274561 - 2⁷ = 159274433 is a prime.

It is not a weakly prime, because it can be changed into another prime (159274567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79637280 + 79637281.

It is an arithmetic number, because the mean of its divisors is an integer number (79637281).

Almost surely, 2^159274561 is an apocalyptic number.

It is an amenable number.

159274561 is a deficient number, since it is larger than the sum of its proper divisors (1).

159274561 is an equidigital number, since it uses as much as digits as its factorization.

159274561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 40.

The square root of 159274561 is about 12620.4025688565. The cubic root of 159274561 is about 542.0618033399.

The spelling of 159274561 in words is "one hundred fifty-nine million, two hundred seventy-four thousand, five hundred sixty-one".