253545453 has 18 divisors (see below), whose sum is σ = 426026094. Its totient is φ = 144882864.

The previous prime is 253545421. The next prime is 253545493. The reversal of 253545453 is 354545352.

It can be written as a sum of positive squares in only one way, i.e., 224190729 + 29354724 = 14973^2 + 5418^2 .

It is not a de Polignac number, because 253545453 - 2⁵ = 253545421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253545493) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 287026 + ... + 287907.

Almost surely, 2^253545453 is an apocalyptic number.

It is an amenable number.

253545453 is a deficient number, since it is larger than the sum of its proper divisors (172480641).

253545453 is a wasteful number, since it uses less digits than its factorization.

253545453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574953 (or 574943 counting only the distinct ones).

The product of its digits is 180000, while the sum is 36.

The square root of 253545453 is about 15923.1106571549. The cubic root of 253545453 is about 632.9245509529.

The spelling of 253545453 in words is "two hundred fifty-three million, five hundred forty-five thousand, four hundred fifty-three".