22452081 has 16 divisors (see below), whose sum is σ = 31128384. Its totient is φ = 14382144.

The previous prime is 22452049. The next prime is 22452097. The reversal of 22452081 is 18025422.

Added to its reverse (18025422) it gives a triangular number (40477503 = T₈₉₉₇).

It is not a de Polignac number, because 22452081 - 2⁵ = 22452049 is a prime.

It is a super-2 number, since 2×22452081² = 1008191882461122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22452011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7995 + ... + 10431.

It is an arithmetic number, because the mean of its divisors is an integer number (1945524).

Almost surely, 2^22452081 is an apocalyptic number.

It is an amenable number.

22452081 is a deficient number, since it is larger than the sum of its proper divisors (8676303).

22452081 is a wasteful number, since it uses less digits than its factorization.

22452081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2560.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 22452081 is about 4738.3626919011. The cubic root of 22452081 is about 282.1102506386.

Adding to 22452081 its reverse (18025422), we get a triangular number (40477503 = T₈₉₉₇).

The spelling of 22452081 in words is "twenty-two million, four hundred fifty-two thousand, eighty-one".