253255445857 has 2 divisors, whose sum is σ = 253255445858. Its totient is φ = 253255445856.

The previous prime is 253255445831. The next prime is 253255445917. The reversal of 253255445857 is 758544552352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159327907281 + 93927538576 = 399159^2 + 306476^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253255445857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 253255445798 and 253255445807.

It is not a weakly prime, because it can be changed into another prime (253255445257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126627722928 + 126627722929.

It is an arithmetic number, because the mean of its divisors is an integer number (126627722929).

Almost surely, 2^253255445857 is an apocalyptic number.

It is an amenable number.

253255445857 is a deficient number, since it is larger than the sum of its proper divisors (1).

253255445857 is an equidigital number, since it uses as much as digits as its factorization.

253255445857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33600000, while the sum is 55.

The spelling of 253255445857 in words is "two hundred fifty-three billion, two hundred fifty-five million, four hundred forty-five thousand, eight hundred fifty-seven".