22481851 has 16 divisors (see below), whose sum is σ = 26687488. Its totient is φ = 18532800.

The previous prime is 22481831. The next prime is 22481887. The reversal of 22481851 is 15818422.

It is a cyclic number.

It is not a de Polignac number, because 22481851 - 2⁹ = 22481339 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22481801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67756 + ... + 68086.

It is an arithmetic number, because the mean of its divisors is an integer number (1667968).

Almost surely, 2^22481851 is an apocalyptic number.

22481851 is a deficient number, since it is larger than the sum of its proper divisors (4205637).

22481851 is a wasteful number, since it uses less digits than its factorization.

22481851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682.

The product of its digits is 5120, while the sum is 31.

The square root of 22481851 is about 4741.5030317400. The cubic root of 22481851 is about 282.2348821887.

It can be divided in two parts, 22481 and 851, that added together give a palindrome (23332).

The spelling of 22481851 in words is "twenty-two million, four hundred eighty-one thousand, eight hundred fifty-one".