157061081 has 2 divisors, whose sum is σ = 157061082. Its totient is φ = 157061080.

The previous prime is 157061063. The next prime is 157061117. The reversal of 157061081 is 180160751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82065481 + 74995600 = 9059^2 + 8660^2 .

It is a cyclic number.

It is not a de Polignac number, because 157061081 - 2¹⁴ = 157044697 is a prime.

It is a super-2 number, since 2×157061081² = 49336366329777122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (157061381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78530540 + 78530541.

It is an arithmetic number, because the mean of its divisors is an integer number (78530541).

Almost surely, 2^157061081 is an apocalyptic number.

It is an amenable number.

157061081 is a deficient number, since it is larger than the sum of its proper divisors (1).

157061081 is an equidigital number, since it uses as much as digits as its factorization.

157061081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 29.

The square root of 157061081 is about 12532.4012463693. The cubic root of 157061081 is about 539.5390224594.

The spelling of 157061081 in words is "one hundred fifty-seven million, sixty-one thousand, eighty-one".