523947 has 4 divisors (see below), whose sum is σ = 698600. Its totient is φ = 349296.

The previous prime is 523937. The next prime is 523949. The reversal of 523947 is 749325.

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

It is a de Polignac number, because none of the positive numbers 2^k-523947 is a prime.

It is a D-number.

It is a Duffinian number.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (523949) 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, 87322 + ... + 87327.

It is an arithmetic number, because the mean of its divisors is an integer number (174650).

2⁵²³⁹⁴⁷ is an apocalyptic number.

523947 is a deficient number, since it is larger than the sum of its proper divisors (174653).

523947 is a wasteful number, since it uses less digits than its factorization.

523947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174652.

The product of its digits is 7560, while the sum is 30.

The square root of 523947 is about 723.8418335521. The cubic root of 523947 is about 80.6174615871.

The spelling of 523947 in words is "five hundred twenty-three thousand, nine hundred forty-seven".