157322537 has 2 divisors, whose sum is σ = 157322538. Its totient is φ = 157322536.

The previous prime is 157322479. The next prime is 157322587. The reversal of 157322537 is 735223751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153859216 + 3463321 = 12404^2 + 1861^2 .

It is an emirp because it is prime and its reverse (735223751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157322537 - 2¹⁰ = 157321513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 157322497 and 157322506.

It is not a weakly prime, because it can be changed into another prime (157322587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78661268 + 78661269.

It is an arithmetic number, because the mean of its divisors is an integer number (78661269).

Almost surely, 2^157322537 is an apocalyptic number.

It is an amenable number.

157322537 is a deficient number, since it is larger than the sum of its proper divisors (1).

157322537 is an equidigital number, since it uses as much as digits as its factorization.

157322537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44100, while the sum is 35.

The square root of 157322537 is about 12542.8281101193. The cubic root of 157322537 is about 539.8382425882.

The spelling of 157322537 in words is "one hundred fifty-seven million, three hundred twenty-two thousand, five hundred thirty-seven".