523405797 has 4 divisors (see below), whose sum is σ = 697874400. Its totient is φ = 348937196.

The previous prime is 523405789. The next prime is 523405807. The reversal of 523405797 is 797504325.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 523405797 - 2³ = 523405789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523405097) 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, 87234297 + ... + 87234302.

It is an arithmetic number, because the mean of its divisors is an integer number (174468600).

Almost surely, 2^523405797 is an apocalyptic number.

It is an amenable number.

523405797 is a deficient number, since it is larger than the sum of its proper divisors (174468603).

523405797 is a wasteful number, since it uses less digits than its factorization.

523405797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174468602.

The product of its (nonzero) digits is 264600, while the sum is 42.

The square root of 523405797 is about 22878.0636636932. The cubic root of 523405797 is about 805.8969450180.

The spelling of 523405797 in words is "five hundred twenty-three million, four hundred five thousand, seven hundred ninety-seven".