523478 has 4 divisors (see below), whose sum is σ = 785220. Its totient is φ = 261738.

The previous prime is 523463. The next prime is 523487. The reversal of 523478 is 874325.

It is a happy number.

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

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 523478.

It is a congruent number.

It is an unprimeable number.

523478 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130868 + ... + 130871.

It is an arithmetic number, because the mean of its divisors is an integer number (196305).

2⁵²³⁴⁷⁸ is an apocalyptic number.

523478 is a deficient number, since it is larger than the sum of its proper divisors (261742).

523478 is a wasteful number, since it uses less digits than its factorization.

523478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261741.

The product of its digits is 6720, while the sum is 29.

The square root of 523478 is about 723.5177952200. The cubic root of 523478 is about 80.5934000716.

It can be divided in two parts, 523 and 478, that added together give a palindrome (1001).

The spelling of 523478 in words is "five hundred twenty-three thousand, four hundred seventy-eight".