157651537 has 2 divisors, whose sum is σ = 157651538. Its totient is φ = 157651536.

The previous prime is 157651451. The next prime is 157651541. The reversal of 157651537 is 735156751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156775441 + 876096 = 12521^2 + 936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157651537 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 157651537.

It is not a weakly prime, because it can be changed into another prime (157651597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78825768 + 78825769.

It is an arithmetic number, because the mean of its divisors is an integer number (78825769).

Almost surely, 2^157651537 is an apocalyptic number.

It is an amenable number.

157651537 is a deficient number, since it is larger than the sum of its proper divisors (1).

157651537 is an equidigital number, since it uses as much as digits as its factorization.

157651537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 110250, while the sum is 40.

The square root of 157651537 is about 12555.9363251014. The cubic root of 157651537 is about 540.2142919502.

The spelling of 157651537 in words is "one hundred fifty-seven million, six hundred fifty-one thousand, five hundred thirty-seven".