22152503 has 4 divisors (see below), whose sum is σ = 22276440. Its totient is φ = 22028568.

The previous prime is 22152467. The next prime is 22152509. The reversal of 22152503 is 30525122.

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 22152503 - 2¹² = 22148407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22152509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61700 + ... + 62057.

It is an arithmetic number, because the mean of its divisors is an integer number (5569110).

Almost surely, 2^22152503 is an apocalyptic number.

22152503 is a deficient number, since it is larger than the sum of its proper divisors (123937).

22152503 is a wasteful number, since it uses less digits than its factorization.

22152503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123936.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 22152503 is about 4706.6445584939. The cubic root of 22152503 is about 280.8498964032.

Adding to 22152503 its reverse (30525122), we get a palindrome (52677625).

The spelling of 22152503 in words is "twenty-two million, one hundred fifty-two thousand, five hundred three".