715521319 has 2 divisors, whose sum is σ = 715521320. Its totient is φ = 715521318.

The previous prime is 715521223. The next prime is 715521343. The reversal of 715521319 is 913125517.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-715521319 is a prime.

It is a super-2 number, since 2×715521319² = 1023941515886999522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (715525319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357760659 + 357760660.

It is an arithmetic number, because the mean of its divisors is an integer number (357760660).

Almost surely, 2^715521319 is an apocalyptic number.

715521319 is a deficient number, since it is larger than the sum of its proper divisors (1).

715521319 is an equidigital number, since it uses as much as digits as its factorization.

715521319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9450, while the sum is 34.

The square root of 715521319 is about 26749.2302506072. The cubic root of 715521319 is about 894.4186768356.

The spelling of 715521319 in words is "seven hundred fifteen million, five hundred twenty-one thousand, three hundred nineteen".