157505713 has 2 divisors, whose sum is σ = 157505714. Its totient is φ = 157505712.

The previous prime is 157505701. The next prime is 157505741. The reversal of 157505713 is 317505751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112508449 + 44997264 = 10607^2 + 6708^2 .

It is a cyclic number.

It is not a de Polignac number, because 157505713 - 2⁵ = 157505681 is a prime.

It is not a weakly prime, because it can be changed into another prime (157505743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78752856 + 78752857.

It is an arithmetic number, because the mean of its divisors is an integer number (78752857).

Almost surely, 2^157505713 is an apocalyptic number.

It is an amenable number.

157505713 is a deficient number, since it is larger than the sum of its proper divisors (1).

157505713 is an equidigital number, since it uses as much as digits as its factorization.

157505713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18375, while the sum is 34.

The square root of 157505713 is about 12550.1280073153. The cubic root of 157505713 is about 540.0476786891.

The spelling of 157505713 in words is "one hundred fifty-seven million, five hundred five thousand, seven hundred thirteen".