253577493 has 64 divisors (see below), whose sum is σ = 423118080. Its totient is φ = 149071104.

The previous prime is 253577459. The next prime is 253577501. The reversal of 253577493 is 394775352.

253577493 is a `hidden beast` number, since 2 + 535 + 77 + 49 + 3 = 666.

253577493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 253577493 - 2⁸ = 253577237 is a prime.

It is a super-3 number, since 3×253577493³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253577293) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 799771 + ... + 800087.

It is an arithmetic number, because the mean of its divisors is an integer number (6611220).

Almost surely, 2^253577493 is an apocalyptic number.

It is an amenable number.

253577493 is a deficient number, since it is larger than the sum of its proper divisors (169540587).

253577493 is a wasteful number, since it uses less digits than its factorization.

253577493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435 (or 429 counting only the distinct ones).

The product of its digits is 793800, while the sum is 45.

The square root of 253577493 is about 15924.1167101978. The cubic root of 253577493 is about 632.9512102734.

The spelling of 253577493 in words is "two hundred fifty-three million, five hundred seventy-seven thousand, four hundred ninety-three".