253645413 has 16 divisors (see below), whose sum is σ = 394396800. Its totient is φ = 144939648.

The previous prime is 253645411. The next prime is 253645429. The reversal of 253645413 is 314546352.

It is not a de Polignac number, because 253645413 - 2¹ = 253645411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253645411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122220 + ... + 124277.

It is an arithmetic number, because the mean of its divisors is an integer number (24649800).

Almost surely, 2^253645413 is an apocalyptic number.

It is an amenable number.

253645413 is a deficient number, since it is larger than the sum of its proper divisors (140751387).

253645413 is an equidigital number, since it uses as much as digits as its factorization.

253645413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246521 (or 246507 counting only the distinct ones).

The product of its digits is 43200, while the sum is 33.

The square root of 253645413 is about 15926.2491817753. The cubic root of 253645413 is about 633.0077166139.

The spelling of 253645413 in words is "two hundred fifty-three million, six hundred forty-five thousand, four hundred thirteen".