22154137 has 2 divisors, whose sum is σ = 22154138. Its totient is φ = 22154136.

The previous prime is 22154131. The next prime is 22154177. The reversal of 22154137 is 73145122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19395216 + 2758921 = 4404^2 + 1661^2 .

It is a cyclic number.

It is not a de Polignac number, because 22154137 - 2¹⁹ = 21629849 is a prime.

It is not a weakly prime, because it can be changed into another prime (22154131) 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 as a sum of consecutive naturals, namely, 11077068 + 11077069.

It is an arithmetic number, because the mean of its divisors is an integer number (11077069).

Almost surely, 2^22154137 is an apocalyptic number.

It is an amenable number.

22154137 is a deficient number, since it is larger than the sum of its proper divisors (1).

22154137 is an equidigital number, since it uses as much as digits as its factorization.

22154137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 25.

The square root of 22154137 is about 4706.8181396778. The cubic root of 22154137 is about 280.8568015288.

Adding to 22154137 its reverse (73145122), we get a palindrome (95299259).

The spelling of 22154137 in words is "twenty-two million, one hundred fifty-four thousand, one hundred thirty-seven".