523345 has 16 divisors (see below), whose sum is σ = 684288. Its totient is φ = 382720.

The previous prime is 523333. The next prime is 523349. The reversal of 523345 is 543325.

It is not a de Polignac number, because 523345 - 2¹³ = 515153 is a prime.

It is a Duffinian number.

Its product of digits (1800) is a multiple of the sum of its prime divisors (200).

It is not an unprimeable number, because it can be changed into a prime (523349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3930 + ... + 4060.

It is an arithmetic number, because the mean of its divisors is an integer number (42768).

2⁵²³³⁴⁵ is an apocalyptic number.

It is an amenable number.

523345 is a deficient number, since it is larger than the sum of its proper divisors (160943).

523345 is a wasteful number, since it uses less digits than its factorization.

523345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200.

The product of its digits is 1800, while the sum is 22.

The square root of 523345 is about 723.4258773364. The cubic root of 523345 is about 80.5865740413.

It can be divided in two parts, 523 and 345, that added together give a palindrome (868).

The spelling of 523345 in words is "five hundred twenty-three thousand, three hundred forty-five".