16097281 has 4 divisors (see below), whose sum is σ = 16105392. Its totient is φ = 16089172.

The previous prime is 16097261. The next prime is 16097287. The reversal of 16097281 is 18279061.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 16097281 - 2¹⁵ = 16064513 is a prime.

It is a super-2 number, since 2×16097281² = 518244911185922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16097287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1146 + ... + 5788.

It is an arithmetic number, because the mean of its divisors is an integer number (4026348).

It is a Proth number, since it is equal to 1965 ⋅ 2¹³ + 1 and 1965 < 2¹³.

Almost surely, 2^16097281 is an apocalyptic number.

It is an amenable number.

16097281 is a deficient number, since it is larger than the sum of its proper divisors (8111).

16097281 is an equidigital number, since it uses as much as digits as its factorization.

16097281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8110.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 16097281 is about 4012.1416973980. The cubic root of 16097281 is about 252.4938716939.

The spelling of 16097281 in words is "sixteen million, ninety-seven thousand, two hundred eighty-one".