253878455 has 4 divisors (see below), whose sum is σ = 304654152. Its totient is φ = 203102760.

The previous prime is 253878403. The next prime is 253878617. The reversal of 253878455 is 554878352.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 253878455 - 2⁸ = 253878199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25387841 + ... + 25387850.

It is an arithmetic number, because the mean of its divisors is an integer number (76163538).

Almost surely, 2^253878455 is an apocalyptic number.

253878455 is a deficient number, since it is larger than the sum of its proper divisors (50775697).

253878455 is an equidigital number, since it uses as much as digits as its factorization.

253878455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50775696.

The product of its digits is 1344000, while the sum is 47.

The square root of 253878455 is about 15933.5637884310. The cubic root of 253878455 is about 633.2015202752.

The spelling of 253878455 in words is "two hundred fifty-three million, eight hundred seventy-eight thousand, four hundred fifty-five".