253642455 has 64 divisors (see below), whose sum is σ = 496742400. Its totient is φ = 121772160.

The previous prime is 253642421. The next prime is 253642469. The reversal of 253642455 is 554246352.

253642455 is a `hidden beast` number, since 2 + 5 + 3 + 642 + 4 + 5 + 5 = 666.

It is not a de Polignac number, because 253642455 - 2⁶ = 253642391 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 161082 + ... + 162648.

It is an arithmetic number, because the mean of its divisors is an integer number (7761600).

Almost surely, 2^253642455 is an apocalyptic number.

253642455 is a deficient number, since it is larger than the sum of its proper divisors (243099945).

253642455 is a wasteful number, since it uses less digits than its factorization.

253642455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701 (or 1695 counting only the distinct ones).

The product of its digits is 144000, while the sum is 36.

The square root of 253642455 is about 15926.1563159477. The cubic root of 253642455 is about 633.0052559030.

The spelling of 253642455 in words is "two hundred fifty-three million, six hundred forty-two thousand, four hundred fifty-five".