715270221 has 6 divisors (see below), whose sum is σ = 1033168110. Its totient is φ = 476846808.

The previous prime is 715270211. The next prime is 715270229. The reversal of 715270221 is 122072517.

It can be written as a sum of positive squares in only one way, i.e., 661775625 + 53494596 = 25725^2 + 7314^2 .

It is not a de Polignac number, because 715270221 - 2¹⁰ = 715269197 is a prime.

It is a super-2 number, since 2×715270221² = 1023222978098777682, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (715270229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39737226 + ... + 39737243.

It is an arithmetic number, because the mean of its divisors is an integer number (172194685).

Almost surely, 2^715270221 is an apocalyptic number.

It is an amenable number.

715270221 is a deficient number, since it is larger than the sum of its proper divisors (317897889).

715270221 is a wasteful number, since it uses less digits than its factorization.

715270221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79474475 (or 79474472 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 715270221 is about 26744.5362831364. The cubic root of 715270221 is about 894.3140384358.

The spelling of 715270221 in words is "seven hundred fifteen million, two hundred seventy thousand, two hundred twenty-one".