345210457 has 2 divisors, whose sum is σ = 345210458. Its totient is φ = 345210456.

The previous prime is 345210443. The next prime is 345210469. The reversal of 345210457 is 754012543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210279001 + 134931456 = 14501^2 + 11616^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345210457 is a prime.

It is not a weakly prime, because it can be changed into another prime (345210157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172605228 + 172605229.

It is an arithmetic number, because the mean of its divisors is an integer number (172605229).

Almost surely, 2^345210457 is an apocalyptic number.

It is an amenable number.

345210457 is a deficient number, since it is larger than the sum of its proper divisors (1).

345210457 is an equidigital number, since it uses as much as digits as its factorization.

345210457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 345210457 is about 18579.8400692794. The cubic root of 345210457 is about 701.5004935455.

The spelling of 345210457 in words is "three hundred forty-five million, two hundred ten thousand, four hundred fifty-seven".