157047757 has 2 divisors, whose sum is σ = 157047758. Its totient is φ = 157047756.

The previous prime is 157047743. The next prime is 157047763. The reversal of 157047757 is 757740751.

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., 156600196 + 447561 = 12514^2 + 669^2 .

It is a cyclic number.

It is not a de Polignac number, because 157047757 - 2⁷ = 157047629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157047797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78523878 + 78523879.

It is an arithmetic number, because the mean of its divisors is an integer number (78523879).

Almost surely, 2^157047757 is an apocalyptic number.

It is an amenable number.

157047757 is a deficient number, since it is larger than the sum of its proper divisors (1).

157047757 is an equidigital number, since it uses as much as digits as its factorization.

157047757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240100, while the sum is 43.

The square root of 157047757 is about 12531.8696530087. The cubic root of 157047757 is about 539.5237650806.

The spelling of 157047757 in words is "one hundred fifty-seven million, forty-seven thousand, seven hundred fifty-seven".