22081497 has 8 divisors (see below), whose sum is σ = 29856960. Its totient is φ = 14513520.

The previous prime is 22081481. The next prime is 22081561. The reversal of 22081497 is 79418022.

It is a happy number.

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

It is not a de Polignac number, because 22081497 - 2⁴ = 22081481 is a prime.

It is a super-2 number, since 2×22081497² = 975185019522018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22081597) 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, 51622 + ... + 52047.

It is an arithmetic number, because the mean of its divisors is an integer number (3732120).

Almost surely, 2^22081497 is an apocalyptic number.

It is an amenable number.

22081497 is a deficient number, since it is larger than the sum of its proper divisors (7775463).

22081497 is a wasteful number, since it uses less digits than its factorization.

22081497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103743.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 22081497 is about 4699.0953384668. The cubic root of 22081497 is about 280.5495033706.

It can be divided in two parts, 22081 and 497, that added together give a triangular number (22578 = T₂₁₂).

The spelling of 22081497 in words is "twenty-two million, eighty-one thousand, four hundred ninety-seven".