253651005 has 12 divisors (see below), whose sum is σ = 439661820. Its totient is φ = 135280512.

The previous prime is 253651003. The next prime is 253651019. The reversal of 253651005 is 500156352.

253651005 is a `hidden beast` number, since 2 + 5 + 3 + 651 + 0 + 0 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 142706916 + 110944089 = 11946^2 + 10533^2 .

It is not a de Polignac number, because 253651005 - 2¹ = 253651003 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 253651005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253651003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2818300 + ... + 2818389.

It is an arithmetic number, because the mean of its divisors is an integer number (36638485).

Almost surely, 2^253651005 is an apocalyptic number.

It is an amenable number.

253651005 is a deficient number, since it is larger than the sum of its proper divisors (186010815).

253651005 is a wasteful number, since it uses less digits than its factorization.

253651005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5636700 (or 5636697 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 253651005 is about 15926.4247400350. The cubic root of 253651005 is about 633.0123684532.

The spelling of 253651005 in words is "two hundred fifty-three million, six hundred fifty-one thousand, five".