253400044 has 12 divisors (see below), whose sum is σ = 450966600. Its totient is φ = 124552448.

The previous prime is 253400023. The next prime is 253400047. The reversal of 253400044 is 440004352.

It is a happy number.

It is a super-3 number, since 3×253400044³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 253399988 and 253400024.

It is not an unprimeable number, because it can be changed into a prime (253400047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 536629 + ... + 537100.

It is an arithmetic number, because the mean of its divisors is an integer number (37580550).

Almost surely, 2^253400044 is an apocalyptic number.

It is an amenable number.

253400044 is a deficient number, since it is larger than the sum of its proper divisors (197566556).

253400044 is a wasteful number, since it uses less digits than its factorization.

253400044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073792 (or 1073790 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 253400044 is about 15918.5440288991. The cubic root of 253400044 is about 632.8035331705.

Adding to 253400044 its reverse (440004352), we get a palindrome (693404396).

The spelling of 253400044 in words is "two hundred fifty-three million, four hundred thousand, forty-four".