345901 has 4 divisors (see below), whose sum is σ = 347904. Its totient is φ = 343900.

The previous prime is 345889. The next prime is 345907. The reversal of 345901 is 109543.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 109543 = 7 ⋅15649.

It is a cyclic number.

It is not a de Polignac number, because 345901 - 2⁵ = 345869 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

345901 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 715 + ... + 1096.

It is an arithmetic number, because the mean of its divisors is an integer number (86976).

2³⁴⁵⁹⁰¹ is an apocalyptic number.

It is an amenable number.

345901 is a deficient number, since it is larger than the sum of its proper divisors (2003).

345901 is a wasteful number, since it uses less digits than its factorization.

345901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 345901 is about 588.1334882491. The cubic root of 345901 is about 70.1967931696.

The spelling of 345901 in words is "three hundred forty-five thousand, nine hundred one".