253553388 has 24 divisors (see below), whose sum is σ = 645408960. Its totient is φ = 76834320.

The previous prime is 253553387. The next prime is 253553407. The reversal of 253553388 is 883355352.

It is not an unprimeable number, because it can be changed into a prime (253553383) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 960298 + ... + 960561.

It is an arithmetic number, because the mean of its divisors is an integer number (26892040).

Almost surely, 2^253553388 is an apocalyptic number.

It is an amenable number.

253553388 is an abundant number, since it is smaller than the sum of its proper divisors (391855572).

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

253553388 is a wasteful number, since it uses less digits than its factorization.

253553388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920877 (or 1920875 counting only the distinct ones).

The product of its digits is 432000, while the sum is 42.

The square root of 253553388 is about 15923.3598213442. The cubic root of 253553388 is about 632.9311535874.

The spelling of 253553388 in words is "two hundred fifty-three million, five hundred fifty-three thousand, three hundred eighty-eight".