253430523 has 12 divisors (see below), whose sum is σ = 371081880. Its totient is φ = 166638816.

The previous prime is 253430521. The next prime is 253430557. The reversal of 253430523 is 325034352.

It is not a de Polignac number, because 253430523 - 2¹ = 253430521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (253430521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 192213 + ... + 193526.

It is an arithmetic number, because the mean of its divisors is an integer number (30923490).

Almost surely, 2^253430523 is an apocalyptic number.

253430523 is a deficient number, since it is larger than the sum of its proper divisors (117651357).

253430523 is a wasteful number, since it uses less digits than its factorization.

253430523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385818 (or 385815 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 27.

The square root of 253430523 is about 15919.5013426929. The cubic root of 253430523 is about 632.8289033919.

Adding to 253430523 its reverse (325034352), we get a palindrome (578464875).

The spelling of 253430523 in words is "two hundred fifty-three million, four hundred thirty thousand, five hundred twenty-three".