501225523 has 2 divisors, whose sum is σ = 501225524. Its totient is φ = 501225522.

The previous prime is 501225509. The next prime is 501225547. The reversal of 501225523 is 325522105.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 501225523 - 2²⁵ = 467671091 is a prime.

It is not a weakly prime, because it can be changed into another prime (501225553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250612761 + 250612762.

It is an arithmetic number, because the mean of its divisors is an integer number (250612762).

Almost surely, 2^501225523 is an apocalyptic number.

501225523 is a deficient number, since it is larger than the sum of its proper divisors (1).

501225523 is an equidigital number, since it uses as much as digits as its factorization.

501225523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 501225523 is about 22388.0665310786. The cubic root of 501225523 is about 794.3484623979.

Adding to 501225523 its reverse (325522105), we get a palindrome (826747628).

The spelling of 501225523 in words is "five hundred one million, two hundred twenty-five thousand, five hundred twenty-three".