523304401 has 4 divisors (see below), whose sum is σ = 523476900. Its totient is φ = 523131904.

The previous prime is 523304377. The next prime is 523304423. The reversal of 523304401 is 104403325.

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 450458176 + 72846225 = 21224^2 + 8535^2 .

It is a cyclic number.

It is not a de Polignac number, because 523304401 - 2¹⁹ = 522780113 is a prime.

It is a super-2 number, since 2×523304401² = 547694992211937602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523304501) 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, 81616 + ... + 87793.

It is an arithmetic number, because the mean of its divisors is an integer number (130869225).

Almost surely, 2^523304401 is an apocalyptic number.

It is an amenable number.

523304401 is a deficient number, since it is larger than the sum of its proper divisors (172499).

523304401 is a wasteful number, since it uses less digits than its factorization.

523304401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172498.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 523304401 is about 22875.8475471402. The cubic root of 523304401 is about 805.8449012664.

Adding to 523304401 its reverse (104403325), we get a palindrome (627707726).

The spelling of 523304401 in words is "five hundred twenty-three million, three hundred four thousand, four hundred one".