345002557 has 2 divisors, whose sum is σ = 345002558. Its totient is φ = 345002556.

The previous prime is 345002533. The next prime is 345002617. The reversal of 345002557 is 755200543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194351481 + 150651076 = 13941^2 + 12274^2 .

It is a cyclic number.

It is not a de Polignac number, because 345002557 - 2⁷ = 345002429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345002857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172501278 + 172501279.

It is an arithmetic number, because the mean of its divisors is an integer number (172501279).

Almost surely, 2^345002557 is an apocalyptic number.

It is an amenable number.

345002557 is a deficient number, since it is larger than the sum of its proper divisors (1).

345002557 is an equidigital number, since it uses as much as digits as its factorization.

345002557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21000, while the sum is 31.

The square root of 345002557 is about 18574.2444530053. The cubic root of 345002557 is about 701.3596410724.

The spelling of 345002557 in words is "three hundred forty-five million, two thousand, five hundred fifty-seven".