253355442 has 16 divisors (see below), whose sum is σ = 528742080. Its totient is φ = 80779952.

The previous prime is 253355413. The next prime is 253355447. The reversal of 253355442 is 244553352.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (253355447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 917817 + ... + 918092.

It is an arithmetic number, because the mean of its divisors is an integer number (33046380).

Almost surely, 2^253355442 is an apocalyptic number.

253355442 is an abundant number, since it is smaller than the sum of its proper divisors (275386638).

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

253355442 is a wasteful number, since it uses less digits than its factorization.

253355442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835937.

The product of its digits is 72000, while the sum is 33.

The square root of 253355442 is about 15917.1430225402. The cubic root of 253355442 is about 632.7664035278.

It can be divided in two parts, 2533 and 55442, that added together give a palindrome (57975).

The spelling of 253355442 in words is "two hundred fifty-three million, three hundred fifty-five thousand, four hundred forty-two".