157073317 has 2 divisors, whose sum is σ = 157073318. Its totient is φ = 157073316.

The previous prime is 157073269. The next prime is 157073321. The reversal of 157073317 is 713370751.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119115396 + 37957921 = 10914^2 + 6161^2 .

It is a cyclic number.

It is not a de Polignac number, because 157073317 - 2¹¹ = 157071269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157073347) 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, 78536658 + 78536659.

It is an arithmetic number, because the mean of its divisors is an integer number (78536659).

Almost surely, 2^157073317 is an apocalyptic number.

It is an amenable number.

157073317 is a deficient number, since it is larger than the sum of its proper divisors (1).

157073317 is an equidigital number, since it uses as much as digits as its factorization.

157073317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15435, while the sum is 34.

The square root of 157073317 is about 12532.8894114645. The cubic root of 157073317 is about 539.5530332039.

The spelling of 157073317 in words is "one hundred fifty-seven million, seventy-three thousand, three hundred seventeen".