523445 has 8 divisors (see below), whose sum is σ = 676536. Its totient is φ = 386496.

The previous prime is 523433. The next prime is 523459. The reversal of 523445 is 544325.

523445 is nontrivially palindromic in base 14.

It can be written as a sum of positive squares in 4 ways, for example, as 37636 + 485809 = 194^2 + 697^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 523445 - 2¹² = 519349 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 523445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3962 + ... + 4091.

It is an arithmetic number, because the mean of its divisors is an integer number (84567).

2⁵²³⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

523445 is a deficient number, since it is larger than the sum of its proper divisors (153091).

523445 is a wasteful number, since it uses less digits than its factorization.

523445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8071.

The product of its digits is 2400, while the sum is 23.

The square root of 523445 is about 723.4949896164. The cubic root of 523445 is about 80.5917065028.

The spelling of 523445 in words is "five hundred twenty-three thousand, four hundred forty-five".