22154851 has 6 divisors (see below), whose sum is σ = 22342556. Its totient is φ = 21968700.

The previous prime is 22154833. The next prime is 22154861. The reversal of 22154851 is 15845122.

It is not a de Polignac number, because 22154851 - 2¹³ = 22146659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22154861) 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 5 ways as a sum of consecutive naturals, for example, 16516 + ... + 17806.

Almost surely, 2^22154851 is an apocalyptic number.

22154851 is a deficient number, since it is larger than the sum of its proper divisors (187705).

22154851 is an equidigital number, since it uses as much as digits as its factorization.

22154851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553 (or 1422 counting only the distinct ones).

The product of its digits is 3200, while the sum is 28.

The square root of 22154851 is about 4706.8939864841. The cubic root of 22154851 is about 280.8598187170.

Adding to 22154851 its reverse (15845122), we get a palindrome (37999973).

It can be divided in two parts, 22154 and 851, that added together give a triangular number (23005 = T₂₁₄).

The spelling of 22154851 in words is "twenty-two million, one hundred fifty-four thousand, eight hundred fifty-one".