715571081 has 2 divisors, whose sum is σ = 715571082. Its totient is φ = 715571080.

The previous prime is 715571069. The next prime is 715571111. The reversal of 715571081 is 180175517.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 715081081 + 490000 = 26741^2 + 700^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-715571081 is a prime.

It is a super-2 number, since 2×715571081² = 1024083943927017122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (715571281) 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, 357785540 + 357785541.

It is an arithmetic number, because the mean of its divisors is an integer number (357785541).

Almost surely, 2^715571081 is an apocalyptic number.

It is an amenable number.

715571081 is a deficient number, since it is larger than the sum of its proper divisors (1).

715571081 is an equidigital number, since it uses as much as digits as its factorization.

715571081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9800, while the sum is 35.

The square root of 715571081 is about 26750.1603920425. The cubic root of 715571081 is about 894.4394109163.

The spelling of 715571081 in words is "seven hundred fifteen million, five hundred seventy-one thousand, eighty-one".