345047957 has 2 divisors, whose sum is σ = 345047958. Its totient is φ = 345047956.

The previous prime is 345047921. The next prime is 345048023. The reversal of 345047957 is 759740543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177449041 + 167598916 = 13321^2 + 12946^2 .

It is a cyclic number.

It is not a de Polignac number, because 345047957 - 2²⁴ = 328270741 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345047557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172523978 + 172523979.

It is an arithmetic number, because the mean of its divisors is an integer number (172523979).

Almost surely, 2^345047957 is an apocalyptic number.

It is an amenable number.

345047957 is a deficient number, since it is larger than the sum of its proper divisors (1).

345047957 is an equidigital number, since it uses as much as digits as its factorization.

345047957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 529200, while the sum is 44.

The square root of 345047957 is about 18575.4665351910. The cubic root of 345047957 is about 701.3904044493.

The spelling of 345047957 in words is "three hundred forty-five million, forty-seven thousand, nine hundred fifty-seven".