253555331 has 2 divisors, whose sum is σ = 253555332. Its totient is φ = 253555330.

The previous prime is 253555301. The next prime is 253555369. The reversal of 253555331 is 133555352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 253555331 - 2¹⁴ = 253538947 is a prime.

It is a super-2 number, since 2×253555331² = 128580611757039122, which contains 22 as substring.

It is a Chen prime.

It is equal to p_13863083 and since 253555331 and 13863083 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (253555301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126777665 + 126777666.

It is an arithmetic number, because the mean of its divisors is an integer number (126777666).

Almost surely, 2^253555331 is an apocalyptic number.

253555331 is a deficient number, since it is larger than the sum of its proper divisors (1).

253555331 is an equidigital number, since it uses as much as digits as its factorization.

253555331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33750, while the sum is 32.

The square root of 253555331 is about 15923.4208322207. The cubic root of 253555331 is about 632.9327703174.

The spelling of 253555331 in words is "two hundred fifty-three million, five hundred fifty-five thousand, three hundred thirty-one".