253635433 has 2 divisors, whose sum is σ = 253635434. Its totient is φ = 253635432.

The previous prime is 253635413. The next prime is 253635443. The reversal of 253635433 is 334536352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 236759769 + 16875664 = 15387^2 + 4108^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253635433 is a prime.

It is not a weakly prime, because it can be changed into another prime (253635413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126817716 + 126817717.

It is an arithmetic number, because the mean of its divisors is an integer number (126817717).

Almost surely, 2^253635433 is an apocalyptic number.

It is an amenable number.

253635433 is a deficient number, since it is larger than the sum of its proper divisors (1).

253635433 is an equidigital number, since it uses as much as digits as its factorization.

253635433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 34.

The square root of 253635433 is about 15925.9358594715. The cubic root of 253635433 is about 632.9994143416. Note that the first 3 decimals are identical.

The spelling of 253635433 in words is "two hundred fifty-three million, six hundred thirty-five thousand, four hundred thirty-three".