22052381 has 8 divisors (see below), whose sum is σ = 23786784. Its totient is φ = 20323440.

The previous prime is 22052347. The next prime is 22052431. The reversal of 22052381 is 18325022.

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-22052381 is a prime.

It is a super-3 number, since 3×22052381³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22052321) 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, 11750 + ... + 13496.

It is an arithmetic number, because the mean of its divisors is an integer number (2973348).

Almost surely, 2^22052381 is an apocalyptic number.

It is an amenable number.

22052381 is a deficient number, since it is larger than the sum of its proper divisors (1734403).

22052381 is a wasteful number, since it uses less digits than its factorization.

22052381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2731.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 22052381 is about 4695.9962734227. The cubic root of 22052381 is about 280.4261410790.

The spelling of 22052381 in words is "twenty-two million, fifty-two thousand, three hundred eighty-one".