523621641 has 8 divisors (see below), whose sum is σ = 739230624. Its totient is φ = 328546880.

The previous prime is 523621639. The next prime is 523621667. The reversal of 523621641 is 146126325.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 523621641 - 2¹ = 523621639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 523621599 and 523621608.

It is not an unprimeable number, because it can be changed into a prime (523620641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5133495 + ... + 5133596.

It is an arithmetic number, because the mean of its divisors is an integer number (92403828).

Almost surely, 2^523621641 is an apocalyptic number.

523621641 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

523621641 is a deficient number, since it is larger than the sum of its proper divisors (215608983).

523621641 is a wasteful number, since it uses less digits than its factorization.

523621641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10267111.

The product of its digits is 8640, while the sum is 30.

The square root of 523621641 is about 22882.7804473145. The cubic root of 523621641 is about 806.0077093718.

Adding to 523621641 its reverse (146126325), we get a palindrome (669747966).

The spelling of 523621641 in words is "five hundred twenty-three million, six hundred twenty-one thousand, six hundred forty-one".