22057861 has 8 divisors (see below), whose sum is σ = 25361280. Its totient is φ = 18792528.

The previous prime is 22057859. The next prime is 22057873. The reversal of 22057861 is 16875022.

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

It is a cyclic number.

It is not a de Polignac number, because 22057861 - 2¹ = 22057859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22057561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8266 + ... + 10603.

It is an arithmetic number, because the mean of its divisors is an integer number (3170160).

Almost surely, 2^22057861 is an apocalyptic number.

It is an amenable number.

22057861 is a deficient number, since it is larger than the sum of its proper divisors (3303419).

22057861 is a wasteful number, since it uses less digits than its factorization.

22057861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19043.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 22057861 is about 4696.5797129400. The cubic root of 22057861 is about 280.4493677165.

It can be divided in two parts, 220 and 57861, that added together give a square (58081 = 241²).

The spelling of 22057861 in words is "twenty-two million, fifty-seven thousand, eight hundred sixty-one".