715081021 has 2 divisors, whose sum is σ = 715081022. Its totient is φ = 715081020.

The previous prime is 715080997. The next prime is 715081033. The reversal of 715081021 is 120180517.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 706815396 + 8265625 = 26586^2 + 2875^2 .

It is a cyclic number.

It is not a de Polignac number, because 715081021 - 2¹⁵ = 715048253 is a prime.

It is a super-2 number, since 2×715081021² = 1022681733188804882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (715081621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357540510 + 357540511.

It is an arithmetic number, because the mean of its divisors is an integer number (357540511).

Almost surely, 2^715081021 is an apocalyptic number.

It is an amenable number.

715081021 is a deficient number, since it is larger than the sum of its proper divisors (1).

715081021 is an equidigital number, since it uses as much as digits as its factorization.

715081021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 25.

The square root of 715081021 is about 26740.9988781272. The cubic root of 715081021 is about 894.2351781989.

The spelling of 715081021 in words is "seven hundred fifteen million, eighty-one thousand, twenty-one".