7713157 has 2 divisors, whose sum is σ = 7713158. Its totient is φ = 7713156.

The previous prime is 7713137. The next prime is 7713161. The reversal of 7713157 is 7513177.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7667361 + 45796 = 2769^2 + 214^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7713157 is a prime.

7713157 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7713127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3856578 + 3856579.

It is an arithmetic number, because the mean of its divisors is an integer number (3856579).

Almost surely, 2^7713157 is an apocalyptic number.

It is an amenable number.

7713157 is a deficient number, since it is larger than the sum of its proper divisors (1).

7713157 is an equidigital number, since it uses as much as digits as its factorization.

7713157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5145, while the sum is 31.

The square root of 7713157 is about 2777.2571000899. The cubic root of 7713157 is about 197.5804895449.

The spelling of 7713157 in words is "seven million, seven hundred thirteen thousand, one hundred fifty-seven".