523405463 has 4 divisors (see below), whose sum is σ = 598177680. Its totient is φ = 448633248.

The previous prime is 523405453. The next prime is 523405507. The reversal of 523405463 is 364504325.

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

It is not a de Polignac number, because 523405463 - 2⁴ = 523405447 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 (523405423) 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, 37386098 + ... + 37386111.

It is an arithmetic number, because the mean of its divisors is an integer number (149544420).

Almost surely, 2^523405463 is an apocalyptic number.

523405463 is a deficient number, since it is larger than the sum of its proper divisors (74772217).

523405463 is an equidigital number, since it uses as much as digits as its factorization.

523405463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74772216.

The product of its (nonzero) digits is 43200, while the sum is 32.

The square root of 523405463 is about 22878.0563641232. The cubic root of 523405463 is about 805.8967735961.

Adding to 523405463 its reverse (364504325), we get a palindrome (887909788).

The spelling of 523405463 in words is "five hundred twenty-three million, four hundred five thousand, four hundred sixty-three".