253573155 has 24 divisors (see below), whose sum is σ = 479484720. Its totient is φ = 122944320.

The previous prime is 253573123. The next prime is 253573169. The reversal of 253573155 is 551375352.

253573155 is a `hidden beast` number, since 2 + 535 + 73 + 1 + 55 = 666.

253573155 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 253573155 - 2⁵ = 253573123 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 255640 + ... + 256629.

It is an arithmetic number, because the mean of its divisors is an integer number (19978530).

Almost surely, 2^253573155 is an apocalyptic number.

253573155 is a deficient number, since it is larger than the sum of its proper divisors (225911565).

253573155 is a wasteful number, since it uses less digits than its factorization.

253573155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512291 (or 512288 counting only the distinct ones).

The product of its digits is 78750, while the sum is 36.

The square root of 253573155 is about 15923.9805011184. The cubic root of 253573155 is about 632.9476009125.

The spelling of 253573155 in words is "two hundred fifty-three million, five hundred seventy-three thousand, one hundred fifty-five".