253053991 has 2 divisors, whose sum is σ = 253053992. Its totient is φ = 253053990.

The previous prime is 253053979. The next prime is 253054007. The reversal of 253053991 is 199350352.

253053991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 253053991 - 2⁷ = 253053863 is a prime.

It is a super-2 number, since 2×253053991² = 128072644722056162, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 253053991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253053901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126526995 + 126526996.

It is an arithmetic number, because the mean of its divisors is an integer number (126526996).

Almost surely, 2^253053991 is an apocalyptic number.

253053991 is a deficient number, since it is larger than the sum of its proper divisors (1).

253053991 is an equidigital number, since it uses as much as digits as its factorization.

253053991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36450, while the sum is 37.

The square root of 253053991 is about 15907.6708225937. The cubic root of 253053991 is about 632.5153415329.

The spelling of 253053991 in words is "two hundred fifty-three million, fifty-three thousand, nine hundred ninety-one".