253990193 has 2 divisors, whose sum is σ = 253990194. Its totient is φ = 253990192.

The previous prime is 253990189. The next prime is 253990199. The reversal of 253990193 is 391099352.

It is a happy number.

253990193 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 can be written as a sum of positive squares in only one way, i.e., 241087729 + 12902464 = 15527^2 + 3592^2 .

It is a cyclic number.

It is not a de Polignac number, because 253990193 - 2² = 253990189 is a prime.

It is a super-2 number, since 2×253990193² = 129022036280354498, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 253990193.

It is not a weakly prime, because it can be changed into another prime (253990199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126995096 + 126995097.

It is an arithmetic number, because the mean of its divisors is an integer number (126995097).

Almost surely, 2^253990193 is an apocalyptic number.

It is an amenable number.

253990193 is a deficient number, since it is larger than the sum of its proper divisors (1).

253990193 is an equidigital number, since it uses as much as digits as its factorization.

253990193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65610, while the sum is 41.

The square root of 253990193 is about 15937.0697745853. The cubic root of 253990193 is about 633.2944023777.

The spelling of 253990193 in words is "two hundred fifty-three million, nine hundred ninety thousand, one hundred ninety-three".