22772651 has 4 divisors (see below), whose sum is σ = 24842904. Its totient is φ = 20702400.

The previous prime is 22772641. The next prime is 22772653. The reversal of 22772651 is 15627722.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22772651 - 2⁶ = 22772587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22772653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1035110 + ... + 1035131.

It is an arithmetic number, because the mean of its divisors is an integer number (6210726).

Almost surely, 2^22772651 is an apocalyptic number.

22772651 is a deficient number, since it is larger than the sum of its proper divisors (2070253).

22772651 is a wasteful number, since it uses less digits than its factorization.

22772651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2070252.

The product of its digits is 11760, while the sum is 32.

The square root of 22772651 is about 4772.0698863282. The cubic root of 22772651 is about 283.4465640468.

Subtracting from 22772651 its reverse (15627722), we obtain a square (7144929 = 2673²).

The spelling of 22772651 in words is "twenty-two million, seven hundred seventy-two thousand, six hundred fifty-one".