22752131 has 4 divisors (see below), whose sum is σ = 22771200. Its totient is φ = 22733064.

The previous prime is 22752127. The next prime is 22752133. The reversal of 22752131 is 13125722.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13125722 = 2 ⋅6562861.

It is a cyclic number.

It is not a de Polignac number, because 22752131 - 2² = 22752127 is a prime.

It is a super-3 number, since 3×22752131³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22752097 and 22752106.

It is not an unprimeable number, because it can be changed into a prime (22752133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7616 + ... + 10173.

It is an arithmetic number, because the mean of its divisors is an integer number (5692800).

Almost surely, 2^22752131 is an apocalyptic number.

22752131 is a deficient number, since it is larger than the sum of its proper divisors (19069).

22752131 is a wasteful number, since it uses less digits than its factorization.

22752131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19068.

The product of its digits is 840, while the sum is 23.

The square root of 22752131 is about 4769.9193913524. The cubic root of 22752131 is about 283.3614023711.

Adding to 22752131 its reverse (13125722), we get a palindrome (35877853).

The spelling of 22752131 in words is "twenty-two million, seven hundred fifty-two thousand, one hundred thirty-one".