345503507 has 4 divisors (see below), whose sum is σ = 345601296. Its totient is φ = 345405720.

The previous prime is 345503503. The next prime is 345503531. The reversal of 345503507 is 705305543.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 345503507 - 2² = 345503503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345503503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43388 + ... + 50729.

It is an arithmetic number, because the mean of its divisors is an integer number (86400324).

Almost surely, 2^345503507 is an apocalyptic number.

345503507 is a deficient number, since it is larger than the sum of its proper divisors (97789).

345503507 is an equidigital number, since it uses as much as digits as its factorization.

345503507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97788.

The product of its (nonzero) digits is 31500, while the sum is 32.

The square root of 345503507 is about 18587.7246321329. The cubic root of 345503507 is about 701.6989392297.

The spelling of 345503507 in words is "three hundred forty-five million, five hundred three thousand, five hundred seven".