253871444 has 6 divisors (see below), whose sum is σ = 444275034. Its totient is φ = 126935720.

The previous prime is 253871411. The next prime is 253871459. The reversal of 253871444 is 444178352.

It can be written as a sum of positive squares in only one way, i.e., 206784400 + 47087044 = 14380^2 + 6862^2 .

It is a junction number, because it is equal to n+sod(n) for n = 253871398 and 253871407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31733927 + ... + 31733934.

It is an arithmetic number, because the mean of its divisors is an integer number (74045839).

Almost surely, 2^253871444 is an apocalyptic number.

It is an amenable number.

253871444 is a deficient number, since it is larger than the sum of its proper divisors (190403590).

253871444 is a wasteful number, since it uses less digits than its factorization.

253871444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63467865 (or 63467863 counting only the distinct ones).

The product of its digits is 107520, while the sum is 38.

The square root of 253871444 is about 15933.3437796340. The cubic root of 253871444 is about 633.1956914798.

The spelling of 253871444 in words is "two hundred fifty-three million, eight hundred seventy-one thousand, four hundred forty-four".