253920655 has 16 divisors (see below), whose sum is σ = 324616320. Its totient is φ = 190120608.

The previous prime is 253920599. The next prime is 253920671. The reversal of 253920655 is 556029352.

253920655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253920655 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8217 + ... + 23986.

It is an arithmetic number, because the mean of its divisors is an integer number (20288520).

Almost surely, 2^253920655 is an apocalyptic number.

253920655 is a deficient number, since it is larger than the sum of its proper divisors (70695665).

253920655 is a wasteful number, since it uses less digits than its factorization.

253920655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32310.

The product of its (nonzero) digits is 81000, while the sum is 37.

The square root of 253920655 is about 15934.8879820349. The cubic root of 253920655 is about 633.2366021857.

The spelling of 253920655 in words is "two hundred fifty-three million, nine hundred twenty thousand, six hundred fifty-five".