16097021 has 2 divisors, whose sum is σ = 16097022. Its totient is φ = 16097020.

The previous prime is 16096999. The next prime is 16097027. The reversal of 16097021 is 12079061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15912121 + 184900 = 3989^2 + 430^2 .

It is a cyclic number.

It is not a de Polignac number, because 16097021 - 2⁶ = 16096957 is a prime.

It is a super-2 number, since 2×16097021² = 518228170148882, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16097027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8048510 + 8048511.

It is an arithmetic number, because the mean of its divisors is an integer number (8048511).

Almost surely, 2^16097021 is an apocalyptic number.

It is an amenable number.

16097021 is a deficient number, since it is larger than the sum of its proper divisors (1).

16097021 is an equidigital number, since it uses as much as digits as its factorization.

16097021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 16097021 is about 4012.1092956199. The cubic root of 16097021 is about 252.4925122767.

The spelling of 16097021 in words is "sixteen million, ninety-seven thousand, twenty-one".