253668550 has 12 divisors (see below), whose sum is σ = 471823596. Its totient is φ = 101467400.

The previous prime is 253668533. The next prime is 253668551. The reversal of 253668550 is 55866352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253668551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2536636 + ... + 2536735.

It is an arithmetic number, because the mean of its divisors is an integer number (39318633).

Almost surely, 2^253668550 is an apocalyptic number.

253668550 is a deficient number, since it is larger than the sum of its proper divisors (218155046).

253668550 is a wasteful number, since it uses less digits than its factorization.

253668550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5073383 (or 5073378 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 40.

The square root of 253668550 is about 15926.9755446538. The cubic root of 253668550 is about 633.0269632386.

The spelling of 253668550 in words is "two hundred fifty-three million, six hundred sixty-eight thousand, five hundred fifty".