253435289 has 2 divisors, whose sum is σ = 253435290. Its totient is φ = 253435288.

The previous prime is 253435141. The next prime is 253435307. The reversal of 253435289 is 982534352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191545600 + 61889689 = 13840^2 + 7867^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253435289 is a prime.

It is not a weakly prime, because it can be changed into another prime (253435789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126717644 + 126717645.

It is an arithmetic number, because the mean of its divisors is an integer number (126717645).

Almost surely, 2^253435289 is an apocalyptic number.

It is an amenable number.

253435289 is a deficient number, since it is larger than the sum of its proper divisors (1).

253435289 is an equidigital number, since it uses as much as digits as its factorization.

253435289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 41.

The square root of 253435289 is about 15919.6510326075. The cubic root of 253435289 is about 632.8328703485.

The spelling of 253435289 in words is "two hundred fifty-three million, four hundred thirty-five thousand, two hundred eighty-nine".