253857605 has 16 divisors (see below), whose sum is σ = 316306944. Its totient is φ = 195378240.

The previous prime is 253857599. The next prime is 253857623. The reversal of 253857605 is 506758352.

253857605 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 253857605 - 2¹⁶ = 253792069 is a prime.

It is a Duffinian number.

It is a Curzon number.

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, 22082 + ... + 31548.

It is an arithmetic number, because the mean of its divisors is an integer number (19769184).

Almost surely, 2^253857605 is an apocalyptic number.

It is an amenable number.

253857605 is a deficient number, since it is larger than the sum of its proper divisors (62449339).

253857605 is a wasteful number, since it uses less digits than its factorization.

253857605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9676.

The product of its (nonzero) digits is 252000, while the sum is 41.

The square root of 253857605 is about 15932.9094957575. The cubic root of 253857605 is about 633.1841857162.

The spelling of 253857605 in words is "two hundred fifty-three million, eight hundred fifty-seven thousand, six hundred five".