253745523 has 12 divisors (see below), whose sum is σ = 368772040. Its totient is φ = 168124896.

The previous prime is 253745521. The next prime is 253745533. The reversal of 253745523 is 325547352.

It is not a de Polignac number, because 253745523 - 2¹ = 253745521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253745521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85018 + ... + 87951.

Almost surely, 2^253745523 is an apocalyptic number.

253745523 is a deficient number, since it is larger than the sum of its proper divisors (115026517).

253745523 is a wasteful number, since it uses less digits than its factorization.

253745523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173138 (or 173135 counting only the distinct ones).

The product of its digits is 126000, while the sum is 36.

The square root of 253745523 is about 15929.3917962991. The cubic root of 253745523 is about 633.0909851770.

The spelling of 253745523 in words is "two hundred fifty-three million, seven hundred forty-five thousand, five hundred twenty-three".