345256753 has 2 divisors, whose sum is σ = 345256754. Its totient is φ = 345256752.

The previous prime is 345256729. The next prime is 345256759. The reversal of 345256753 is 357652543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189805729 + 155451024 = 13777^2 + 12468^2 .

It is a cyclic number.

It is not a de Polignac number, because 345256753 - 2²¹ = 343159601 is a prime.

It is not a weakly prime, because it can be changed into another prime (345256759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172628376 + 172628377.

It is an arithmetic number, because the mean of its divisors is an integer number (172628377).

Almost surely, 2^345256753 is an apocalyptic number.

It is an amenable number.

345256753 is a deficient number, since it is larger than the sum of its proper divisors (1).

345256753 is an equidigital number, since it uses as much as digits as its factorization.

345256753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 378000, while the sum is 40.

The square root of 345256753 is about 18581.0858939945. The cubic root of 345256753 is about 701.5318514360.

The spelling of 345256753 in words is "three hundred forty-five million, two hundred fifty-six thousand, seven hundred fifty-three".