345615091 has 2 divisors, whose sum is σ = 345615092. Its totient is φ = 345615090.

The previous prime is 345615077. The next prime is 345615139. The reversal of 345615091 is 190516543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345615091 - 2⁵ = 345615059 is a prime.

It is a super-2 number, since 2×345615091² = 238899582253876562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (345715091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172807545 + 172807546.

It is an arithmetic number, because the mean of its divisors is an integer number (172807546).

Almost surely, 2^345615091 is an apocalyptic number.

345615091 is a deficient number, since it is larger than the sum of its proper divisors (1).

345615091 is an equidigital number, since it uses as much as digits as its factorization.

345615091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 345615091 is about 18590.7259406404. The cubic root of 345615091 is about 701.7744714557.

The spelling of 345615091 in words is "three hundred forty-five million, six hundred fifteen thousand, ninety-one".