715631251 has 4 divisors (see below), whose sum is σ = 716372272. Its totient is φ = 714890232.

The previous prime is 715631233. The next prime is 715631291. The reversal of 715631251 is 152136517.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 715631251 - 2⁹ = 715630739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (715631291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 369060 + ... + 370993.

It is an arithmetic number, because the mean of its divisors is an integer number (179093068).

Almost surely, 2^715631251 is an apocalyptic number.

715631251 is a deficient number, since it is larger than the sum of its proper divisors (741021).

715631251 is an equidigital number, since it uses as much as digits as its factorization.

715631251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741020.

The product of its digits is 6300, while the sum is 31.

The square root of 715631251 is about 26751.2850345549. The cubic root of 715631251 is about 894.4644803620.

Adding to 715631251 its reverse (152136517), we get a palindrome (867767768).

The spelling of 715631251 in words is "seven hundred fifteen million, six hundred thirty-one thousand, two hundred fifty-one".