22551493 has 8 divisors (see below), whose sum is σ = 23133312. Its totient is φ = 21974016.

The previous prime is 22551491. The next prime is 22551533. The reversal of 22551493 is 39415522.

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 22551493 - 2¹ = 22551491 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 (22551491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11146 + ... + 13012.

It is an arithmetic number, because the mean of its divisors is an integer number (2891664).

Almost surely, 2^22551493 is an apocalyptic number.

It is an amenable number.

22551493 is a deficient number, since it is larger than the sum of its proper divisors (581819).

22551493 is a wasteful number, since it uses less digits than its factorization.

22551493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2171.

The product of its digits is 10800, while the sum is 31.

The square root of 22551493 is about 4748.8412270785. The cubic root of 22551493 is about 282.5260079953.

The spelling of 22551493 in words is "twenty-two million, five hundred fifty-one thousand, four hundred ninety-three".