523264381 has 4 divisors (see below), whose sum is σ = 523320064. Its totient is φ = 523208700.

The previous prime is 523264367. The next prime is 523264387. The reversal of 523264381 is 183462325.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 523264381 - 2⁷ = 523264253 is a prime.

It is a super-2 number, since 2×523264381² = 547611224846626322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523264387) 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, 9885 + ... + 33826.

It is an arithmetic number, because the mean of its divisors is an integer number (130830016).

Almost surely, 2^523264381 is an apocalyptic number.

It is an amenable number.

523264381 is a deficient number, since it is larger than the sum of its proper divisors (55683).

523264381 is a wasteful number, since it uses less digits than its factorization.

523264381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55682.

The product of its digits is 34560, while the sum is 34.

The square root of 523264381 is about 22874.9728087270. The cubic root of 523264381 is about 805.8243582612.

The spelling of 523264381 in words is "five hundred twenty-three million, two hundred sixty-four thousand, three hundred eighty-one".