351253253257 has 2 divisors, whose sum is σ = 351253253258. Its totient is φ = 351253253256.

The previous prime is 351253253203. The next prime is 351253253353. The reversal of 351253253257 is 752352352153.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 346233389056 + 5019864201 = 588416^2 + 70851^2 .

It is a cyclic number.

It is not a de Polignac number, because 351253253257 - 2¹⁹ = 351252728969 is a prime.

It is a super-2 number, since 2×351253253257² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (351253223257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175626626628 + 175626626629.

It is an arithmetic number, because the mean of its divisors is an integer number (175626626629).

Almost surely, 2^351253253257 is an apocalyptic number.

It is an amenable number.

351253253257 is a deficient number, since it is larger than the sum of its proper divisors (1).

351253253257 is an equidigital number, since it uses as much as digits as its factorization.

351253253257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 945000, while the sum is 43.

The spelling of 351253253257 in words is "three hundred fifty-one billion, two hundred fifty-three million, two hundred fifty-three thousand, two hundred fifty-seven".