345210561 has 12 divisors (see below), whose sum is σ = 499058560. Its totient is φ = 229946040.

The previous prime is 345210557. The next prime is 345210583. The reversal of 345210561 is 165012543.

It is not a de Polignac number, because 345210561 - 2² = 345210557 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345210361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4501 + ... + 26658.

Almost surely, 2^345210561 is an apocalyptic number.

It is an amenable number.

345210561 is a deficient number, since it is larger than the sum of its proper divisors (153847999).

345210561 is a wasteful number, since it uses less digits than its factorization.

345210561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32396 (or 32393 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 345210561 is about 18579.8428680116. The cubic root of 345210561 is about 701.5005639914.

The spelling of 345210561 in words is "three hundred forty-five million, two hundred ten thousand, five hundred sixty-one".