715121513 has 2 divisors, whose sum is σ = 715121514. Its totient is φ = 715121512.

The previous prime is 715121489. The next prime is 715121521. The reversal of 715121513 is 315121517.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 654950464 + 60171049 = 25592^2 + 7757^2 .

It is a cyclic number.

It is not a de Polignac number, because 715121513 - 2⁸ = 715121257 is a prime.

It is a super-2 number, since 2×715121513² = 1022797556710818338, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (715121573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357560756 + 357560757.

It is an arithmetic number, because the mean of its divisors is an integer number (357560757).

Almost surely, 2^715121513 is an apocalyptic number.

It is an amenable number.

715121513 is a deficient number, since it is larger than the sum of its proper divisors (1).

715121513 is an equidigital number, since it uses as much as digits as its factorization.

715121513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1050, while the sum is 26.

The square root of 715121513 is about 26741.7559819844. The cubic root of 715121513 is about 894.2520567932.

The spelling of 715121513 in words is "seven hundred fifteen million, one hundred twenty-one thousand, five hundred thirteen".