345494251 has 2 divisors, whose sum is σ = 345494252. Its totient is φ = 345494250.

The previous prime is 345494243. The next prime is 345494269. The reversal of 345494251 is 152494543.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (152494543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 345494251 - 2³ = 345494243 is a prime.

It is equal to p_18574363 and since 345494251 and 18574363 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 345494251.

It is not a weakly prime, because it can be changed into another prime (343494251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172747125 + 172747126.

It is an arithmetic number, because the mean of its divisors is an integer number (172747126).

Almost surely, 2^345494251 is an apocalyptic number.

345494251 is a deficient number, since it is larger than the sum of its proper divisors (1).

345494251 is an equidigital number, since it uses as much as digits as its factorization.

345494251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 37.

The square root of 345494251 is about 18587.4756489417. The cubic root of 345494251 is about 701.6926730286.

The spelling of 345494251 in words is "three hundred forty-five million, four hundred ninety-four thousand, two hundred fifty-one".