22464551 has 4 divisors (see below), whose sum is σ = 22479912. Its totient is φ = 22449192.

The previous prime is 22464529. The next prime is 22464557. The reversal of 22464551 is 15546422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15546422 = 2 ⋅7773211.

It is a cyclic number.

It is not a de Polignac number, because 22464551 - 2¹⁰ = 22463527 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 (22464557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5225 + ... + 8498.

It is an arithmetic number, because the mean of its divisors is an integer number (5619978).

Almost surely, 2^22464551 is an apocalyptic number.

22464551 is a deficient number, since it is larger than the sum of its proper divisors (15361).

22464551 is a wasteful number, since it uses less digits than its factorization.

22464551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15360.

The product of its digits is 9600, while the sum is 29.

The square root of 22464551 is about 4739.6783646151. The cubic root of 22464551 is about 282.1624694617.

The spelling of 22464551 in words is "twenty-two million, four hundred sixty-four thousand, five hundred fifty-one".