999957253 has 2 divisors, whose sum is σ = 999957254. Its totient is φ = 999957252.

The previous prime is 999957247. The next prime is 999957271. The reversal of 999957253 is 352759999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 918271809 + 81685444 = 30303^2 + 9038^2 .

It is a cyclic number.

It is not a de Polignac number, because 999957253 - 2¹⁷ = 999826181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999957353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499978626 + 499978627.

It is an arithmetic number, because the mean of its divisors is an integer number (499978627).

Almost surely, 2^999957253 is an apocalyptic number.

It is an amenable number.

999957253 is a deficient number, since it is larger than the sum of its proper divisors (1).

999957253 is an equidigital number, since it uses as much as digits as its factorization.

999957253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6889050, while the sum is 58.

The square root of 999957253 is about 31622.1007050449. The cubic root of 999957253 is about 999.9857507970.

The spelling of 999957253 in words is "nine hundred ninety-nine million, nine hundred fifty-seven thousand, two hundred fifty-three".