345355523 has 4 divisors (see below), whose sum is σ = 345429480. Its totient is φ = 345281568.

The previous prime is 345355477. The next prime is 345355547. The reversal of 345355523 is 325553543.

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 345355523 - 2¹² = 345351427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345355553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29465 + ... + 39482.

It is an arithmetic number, because the mean of its divisors is an integer number (86357370).

Almost surely, 2^345355523 is an apocalyptic number.

345355523 is a deficient number, since it is larger than the sum of its proper divisors (73957).

345355523 is an equidigital number, since it uses as much as digits as its factorization.

345355523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73956.

The product of its digits is 135000, while the sum is 35.

The square root of 345355523 is about 18583.7435141577. The cubic root of 345355523 is about 701.5987424226.

The spelling of 345355523 in words is "three hundred forty-five million, three hundred fifty-five thousand, five hundred twenty-three".