253444881 has 16 divisors (see below), whose sum is σ = 346477824. Its totient is φ = 164703504.

The previous prime is 253444837. The next prime is 253444897. The reversal of 253444881 is 188444352.

It is not a de Polignac number, because 253444881 - 2¹⁵ = 253412113 is a prime.

It is a super-2 number, since 2×253444881² = 128468615410208322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (253440881) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 74050 + ... + 77396.

It is an arithmetic number, because the mean of its divisors is an integer number (21654864).

Almost surely, 2^253444881 is an apocalyptic number.

It is an amenable number.

253444881 is a deficient number, since it is larger than the sum of its proper divisors (93032943).

253444881 is a wasteful number, since it uses less digits than its factorization.

253444881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3980.

The product of its digits is 122880, while the sum is 39.

The square root of 253444881 is about 15919.9522926421. The cubic root of 253444881 is about 632.8408540516.

The spelling of 253444881 in words is "two hundred fifty-three million, four hundred forty-four thousand, eight hundred eighty-one".