156159481 has 2 divisors, whose sum is σ = 156159482. Its totient is φ = 156159480.

The previous prime is 156159473. The next prime is 156159517. The reversal of 156159481 is 184951651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140635881 + 15523600 = 11859^2 + 3940^2 .

It is a cyclic number.

It is not a de Polignac number, because 156159481 - 2³ = 156159473 is a prime.

It is a super-2 number, since 2×156159481² = 48771567012378722, which contains 22 as substring.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (156159181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78079740 + 78079741.

It is an arithmetic number, because the mean of its divisors is an integer number (78079741).

Almost surely, 2^156159481 is an apocalyptic number.

It is an amenable number.

156159481 is a deficient number, since it is larger than the sum of its proper divisors (1).

156159481 is an equidigital number, since it uses as much as digits as its factorization.

156159481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 40.

The square root of 156159481 is about 12496.3787154519. The cubic root of 156159481 is about 538.5046432039.

The spelling of 156159481 in words is "one hundred fifty-six million, one hundred fifty-nine thousand, four hundred eighty-one".