345340553 has 2 divisors, whose sum is σ = 345340554. Its totient is φ = 345340552.

The previous prime is 345340529. The next prime is 345340571. The reversal of 345340553 is 355043543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 283686649 + 61653904 = 16843^2 + 7852^2 .

It is a cyclic number.

It is not a de Polignac number, because 345340553 - 2¹⁰ = 345339529 is a prime.

It is not a weakly prime, because it can be changed into another prime (345340153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172670276 + 172670277.

It is an arithmetic number, because the mean of its divisors is an integer number (172670277).

Almost surely, 2^345340553 is an apocalyptic number.

It is an amenable number.

345340553 is a deficient number, since it is larger than the sum of its proper divisors (1).

345340553 is an equidigital number, since it uses as much as digits as its factorization.

345340553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54000, while the sum is 32.

The square root of 345340553 is about 18583.3407384141. The cubic root of 345340553 is about 701.5886049611.

The spelling of 345340553 in words is "three hundred forty-five million, three hundred forty thousand, five hundred fifty-three".