523901 has 4 divisors (see below), whose sum is σ = 598752. Its totient is φ = 449052.

The previous prime is 523877. The next prime is 523903. The reversal of 523901 is 109325.

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.

It is a cyclic number.

It is not a de Polignac number, because 523901 - 2¹⁸ = 261757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523903) 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, 37415 + ... + 37428.

It is an arithmetic number, because the mean of its divisors is an integer number (149688).

2⁵²³⁹⁰¹ is an apocalyptic number.

It is an amenable number.

523901 is a deficient number, since it is larger than the sum of its proper divisors (74851).

523901 is an equidigital number, since it uses as much as digits as its factorization.

523901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74850.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 523901 is about 723.8100579572. The cubic root of 523901 is about 80.6151022443.

The spelling of 523901 in words is "five hundred twenty-three thousand, nine hundred one".