22261751 has 4 divisors (see below), whose sum is σ = 22979904. Its totient is φ = 21543600.

The previous prime is 22261741. The next prime is 22261783. The reversal of 22261751 is 15716222.

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 22261751 - 2¹⁰ = 22260727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22261751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22261741) 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, 359030 + ... + 359091.

It is an arithmetic number, because the mean of its divisors is an integer number (5744976).

Almost surely, 2^22261751 is an apocalyptic number.

22261751 is a deficient number, since it is larger than the sum of its proper divisors (718153).

22261751 is an equidigital number, since it uses as much as digits as its factorization.

22261751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718152.

The product of its digits is 1680, while the sum is 26.

The square root of 22261751 is about 4718.2360051189. The cubic root of 22261751 is about 281.3108223355.

Adding to 22261751 its reverse (15716222), we get a palindrome (37977973).

The spelling of 22261751 in words is "twenty-two million, two hundred sixty-one thousand, seven hundred fifty-one".