22154453 has 8 divisors (see below), whose sum is σ = 22837848. Its totient is φ = 21475584.

The previous prime is 22154449. The next prime is 22154459. The reversal of 22154453 is 35445122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4656964 + 17497489 = 2158^2 + 4183^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22154453 - 2² = 22154449 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22154459) 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 7 ways as a sum of consecutive naturals, for example, 10625 + ... + 12537.

It is an arithmetic number, because the mean of its divisors is an integer number (2854731).

Almost surely, 2^22154453 is an apocalyptic number.

It is an amenable number.

22154453 is a deficient number, since it is larger than the sum of its proper divisors (683395).

22154453 is a wasteful number, since it uses less digits than its factorization.

22154453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2263.

The product of its digits is 4800, while the sum is 26.

The square root of 22154453 is about 4706.8517078829. The cubic root of 22154453 is about 280.8581368750.

Adding to 22154453 its reverse (35445122), we get a palindrome (57599575).

The spelling of 22154453 in words is "twenty-two million, one hundred fifty-four thousand, four hundred fifty-three".