523422401 has 4 divisors (see below), whose sum is σ = 554211972. Its totient is φ = 492632832.

The previous prime is 523422377. The next prime is 523422407. The reversal of 523422401 is 104224325.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 384748225 + 138674176 = 19615^2 + 11776^2 .

It is a cyclic number.

It is not a de Polignac number, because 523422401 - 2¹⁴ = 523406017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523422407) 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, 15394760 + ... + 15394793.

It is an arithmetic number, because the mean of its divisors is an integer number (138552993).

Almost surely, 2^523422401 is an apocalyptic number.

It is an amenable number.

523422401 is a deficient number, since it is larger than the sum of its proper divisors (30789571).

523422401 is a wasteful number, since it uses less digits than its factorization.

523422401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30789570.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 523422401 is about 22878.4265411763. The cubic root of 523422401 is about 805.9054667497.

Adding to 523422401 its reverse (104224325), we get a palindrome (627646726).

The spelling of 523422401 in words is "five hundred twenty-three million, four hundred twenty-two thousand, four hundred one".