523404243 has 6 divisors (see below), whose sum is σ = 756028364. Its totient is φ = 348936156.

The previous prime is 523404223. The next prime is 523404263. The reversal of 523404243 is 342404325.

523404243 is a `hidden beast` number, since 5 + 234 + 0 + 424 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (523404223) and next prime (523404263).

It is not a de Polignac number, because 523404243 - 2⁶ = 523404179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523404223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29078005 + ... + 29078022.

Almost surely, 2^523404243 is an apocalyptic number.

523404243 is a deficient number, since it is larger than the sum of its proper divisors (232624121).

523404243 is a wasteful number, since it uses less digits than its factorization.

523404243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58156033 (or 58156030 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 523404243 is about 22878.0297010035. The cubic root of 523404243 is about 805.8961474437.

Adding to 523404243 its reverse (342404325), we get a palindrome (865808568).

The spelling of 523404243 in words is "five hundred twenty-three million, four hundred four thousand, two hundred forty-three".