253642554 has 48 divisors (see below), whose sum is σ = 600631200. Its totient is φ = 76718880.

The previous prime is 253642553. The next prime is 253642559. The reversal of 253642554 is 455246352.

253642554 is a `hidden beast` number, since 2 + 5 + 3 + 642 + 5 + 5 + 4 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (253642553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162972 + ... + 164520.

It is an arithmetic number, because the mean of its divisors is an integer number (12513150).

Almost surely, 2^253642554 is an apocalyptic number.

253642554 is an abundant number, since it is smaller than the sum of its proper divisors (346988646).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253642554 is a wasteful number, since it uses less digits than its factorization.

253642554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2395 (or 2392 counting only the distinct ones).

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

The square root of 253642554 is about 15926.1594240419. The cubic root of 253642554 is about 633.0053382598.

The spelling of 253642554 in words is "two hundred fifty-three million, six hundred forty-two thousand, five hundred fifty-four".