253439873 has 2 divisors, whose sum is σ = 253439874. Its totient is φ = 253439872.

The previous prime is 253439831. The next prime is 253439887. The reversal of 253439873 is 378934352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211033729 + 42406144 = 14527^2 + 6512^2 .

It is a cyclic number.

It is not a de Polignac number, because 253439873 - 2¹⁰ = 253438849 is a prime.

It is a super-2 number, since 2×253439873² = 128463538452512258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (253439773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126719936 + 126719937.

It is an arithmetic number, because the mean of its divisors is an integer number (126719937).

Almost surely, 2^253439873 is an apocalyptic number.

It is an amenable number.

253439873 is a deficient number, since it is larger than the sum of its proper divisors (1).

253439873 is an equidigital number, since it uses as much as digits as its factorization.

253439873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 44.

The square root of 253439873 is about 15919.7950049616. The cubic root of 253439873 is about 632.8366857713.

The spelling of 253439873 in words is "two hundred fifty-three million, four hundred thirty-nine thousand, eight hundred seventy-three".