157052317 has 2 divisors, whose sum is σ = 157052318. Its totient is φ = 157052316.

The previous prime is 157052299. The next prime is 157052321. The reversal of 157052317 is 713250751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147355321 + 9696996 = 12139^2 + 3114^2 .

It is a cyclic number.

It is not a de Polignac number, because 157052317 - 2¹¹ = 157050269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157022317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78526158 + 78526159.

It is an arithmetic number, because the mean of its divisors is an integer number (78526159).

Almost surely, 2^157052317 is an apocalyptic number.

It is an amenable number.

157052317 is a deficient number, since it is larger than the sum of its proper divisors (1).

157052317 is an equidigital number, since it uses as much as digits as its factorization.

157052317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 157052317 is about 12532.0515878287. The cubic root of 157052317 is about 539.5289868564.

The spelling of 157052317 in words is "one hundred fifty-seven million, fifty-two thousand, three hundred seventeen".