523421279 has 4 divisors (see below), whose sum is σ = 554210784. Its totient is φ = 492631776.

The previous prime is 523421237. The next prime is 523421299. The reversal of 523421279 is 972124325.

It is a happy number.

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 523421279 - 2²⁸ = 254985823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523421299) 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, 15394727 + ... + 15394760.

It is an arithmetic number, because the mean of its divisors is an integer number (138552696).

Almost surely, 2^523421279 is an apocalyptic number.

523421279 is a deficient number, since it is larger than the sum of its proper divisors (30789505).

523421279 is a wasteful number, since it uses less digits than its factorization.

523421279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30789504.

The product of its digits is 30240, while the sum is 35.

The square root of 523421279 is about 22878.4020202461. The cubic root of 523421279 is about 805.9048909072.

The spelling of 523421279 in words is "five hundred twenty-three million, four hundred twenty-one thousand, two hundred seventy-nine".