253005550 has 48 divisors (see below), whose sum is σ = 550357632. Its totient is φ = 84722400.

The previous prime is 253005521. The next prime is 253005569. The reversal of 253005550 is 55500352.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6645 + ... + 23455.

It is an arithmetic number, because the mean of its divisors is an integer number (11465784).

Almost surely, 2^253005550 is an apocalyptic number.

253005550 is an abundant number, since it is smaller than the sum of its proper divisors (297352082).

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

253005550 is a wasteful number, since it uses less digits than its factorization.

253005550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16873 (or 16868 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 25.

The square root of 253005550 is about 15906.1481823853. The cubic root of 253005550 is about 632.4749790911.

The spelling of 253005550 in words is "two hundred fifty-three million, five thousand, five hundred fifty".