22131853 has 2 divisors, whose sum is σ = 22131854. Its totient is φ = 22131852.

The previous prime is 22131847. The next prime is 22131871. The reversal of 22131853 is 35813122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14722569 + 7409284 = 3837^2 + 2722^2 .

It is a cyclic number.

It is not a de Polignac number, because 22131853 - 2⁵ = 22131821 is a prime.

It is equal to p_1397023 and since 22131853 and 1397023 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22131833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11065926 + 11065927.

It is an arithmetic number, because the mean of its divisors is an integer number (11065927).

Almost surely, 2^22131853 is an apocalyptic number.

It is an amenable number.

22131853 is a deficient number, since it is larger than the sum of its proper divisors (1).

22131853 is an equidigital number, since it uses as much as digits as its factorization.

22131853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 25.

The square root of 22131853 is about 4704.4503398378. The cubic root of 22131853 is about 280.7626022291.

Adding to 22131853 its reverse (35813122), we get a palindrome (57944975).

The spelling of 22131853 in words is "twenty-two million, one hundred thirty-one thousand, eight hundred fifty-three".