22057081 has 8 divisors (see below), whose sum is σ = 24019200. Its totient is φ = 20175120.

The previous prime is 22057039. The next prime is 22057093. The reversal of 22057081 is 18075022.

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 22057081 - 2¹³ = 22048889 is a prime.

It is a super-2 number, since 2×22057081² = 973029644481122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22057031) 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, 19465 + ... + 20566.

It is an arithmetic number, because the mean of its divisors is an integer number (3002400).

Almost surely, 2^22057081 is an apocalyptic number.

It is an amenable number.

22057081 is a deficient number, since it is larger than the sum of its proper divisors (1962119).

22057081 is a wasteful number, since it uses less digits than its factorization.

22057081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40079.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 22057081 is about 4696.4966730532. The cubic root of 22057081 is about 280.4460619701.

The spelling of 22057081 in words is "twenty-two million, fifty-seven thousand, eighty-one".