345052091 has 2 divisors, whose sum is σ = 345052092. Its totient is φ = 345052090.

The previous prime is 345052087. The next prime is 345052109. The reversal of 345052091 is 190250543.

Together with next prime (345052109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345052091 - 2² = 345052087 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (345052061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172526045 + 172526046.

It is an arithmetic number, because the mean of its divisors is an integer number (172526046).

Almost surely, 2^345052091 is an apocalyptic number.

345052091 is a deficient number, since it is larger than the sum of its proper divisors (1).

345052091 is an equidigital number, since it uses as much as digits as its factorization.

345052091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 345052091 is about 18575.5778106631. The cubic root of 345052091 is about 701.3932055444.

The spelling of 345052091 in words is "three hundred forty-five million, fifty-two thousand, ninety-one".