253668043 has 2 divisors, whose sum is σ = 253668044. Its totient is φ = 253668042.

The previous prime is 253668011. The next prime is 253668053. The reversal of 253668043 is 340866352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 253668043 - 2⁵ = 253668011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 253667993 and 253668011.

It is not a weakly prime, because it can be changed into another prime (253668053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126834021 + 126834022.

It is an arithmetic number, because the mean of its divisors is an integer number (126834022).

Almost surely, 2^253668043 is an apocalyptic number.

253668043 is a deficient number, since it is larger than the sum of its proper divisors (1).

253668043 is an equidigital number, since it uses as much as digits as its factorization.

253668043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 253668043 is about 15926.9596282530. The cubic root of 253668043 is about 633.0265415008.

The spelling of 253668043 in words is "two hundred fifty-three million, six hundred sixty-eight thousand, forty-three".