817252523 has 2 divisors, whose sum is σ = 817252524. Its totient is φ = 817252522.

The previous prime is 817252507. The next prime is 817252531. The reversal of 817252523 is 325252718.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 817252523 - 2⁴ = 817252507 is a prime.

It is not a weakly prime, because it can be changed into another prime (817258523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408626261 + 408626262.

It is an arithmetic number, because the mean of its divisors is an integer number (408626262).

Almost surely, 2^817252523 is an apocalyptic number.

817252523 is a deficient number, since it is larger than the sum of its proper divisors (1).

817252523 is an equidigital number, since it uses as much as digits as its factorization.

817252523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33600, while the sum is 35.

The square root of 817252523 is about 28587.6288453590. The cubic root of 817252523 is about 934.9436220975.

It can be divided in two parts, 81725 and 2523, that added together give a palindrome (84248).

The spelling of 817252523 in words is "eight hundred seventeen million, two hundred fifty-two thousand, five hundred twenty-three".