22000523 has 4 divisors (see below), whose sum is σ = 22023888. Its totient is φ = 21977160.

The previous prime is 22000513. The next prime is 22000529. The reversal of 22000523 is 32500022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22000523 - 2¹² = 21996427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22000498 and 22000507.

It is not an unprimeable number, because it can be changed into a prime (22000529) 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, 10208 + ... + 12173.

It is an arithmetic number, because the mean of its divisors is an integer number (5505972).

Almost surely, 2^22000523 is an apocalyptic number.

22000523 is a deficient number, since it is larger than the sum of its proper divisors (23365).

22000523 is an equidigital number, since it uses as much as digits as its factorization.

22000523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23364.

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 22000523 is about 4690.4715114794. The cubic root of 22000523 is about 280.2061534518.

Adding to 22000523 its reverse (32500022), we get a palindrome (54500545).

The spelling of 22000523 in words is "twenty-two million, five hundred twenty-three", and thus it is an aban number.