22052261 has 8 divisors (see below), whose sum is σ = 27493824. Its totient is φ = 17183520.

The previous prime is 22052237. The next prime is 22052299. The reversal of 22052261 is 16225022.

22052261 = T₇₁₈ + T₇₁₉ + ... + T₇₉₄.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22052261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22052201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143120 + ... + 143273.

It is an arithmetic number, because the mean of its divisors is an integer number (3436728).

Almost surely, 2^22052261 is an apocalyptic number.

It is an amenable number.

22052261 is a deficient number, since it is larger than the sum of its proper divisors (5441563).

22052261 is a wasteful number, since it uses less digits than its factorization.

22052261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286411.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 22052261 is about 4695.9834965638. The cubic root of 22052261 is about 280.4256324235.

Adding to 22052261 its reverse (16225022), we get a palindrome (38277283).

The spelling of 22052261 in words is "twenty-two million, fifty-two thousand, two hundred sixty-one".