157292017 has 2 divisors, whose sum is σ = 157292018. Its totient is φ = 157292016.

The previous prime is 157291991. The next prime is 157292039. The reversal of 157292017 is 710292751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104060401 + 53231616 = 10201^2 + 7296^2 .

It is a cyclic number.

It is not a de Polignac number, because 157292017 - 2¹¹ = 157289969 is a prime.

It is a super-2 number, since 2×157292017² = 49481557223856578, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (157292087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78646008 + 78646009.

It is an arithmetic number, because the mean of its divisors is an integer number (78646009).

Almost surely, 2^157292017 is an apocalyptic number.

It is an amenable number.

157292017 is a deficient number, since it is larger than the sum of its proper divisors (1).

157292017 is an equidigital number, since it uses as much as digits as its factorization.

157292017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8820, while the sum is 34.

The square root of 157292017 is about 12541.6114195904. The cubic root of 157292017 is about 539.8033314454.

The spelling of 157292017 in words is "one hundred fifty-seven million, two hundred ninety-two thousand, seventeen".