16501361 has 2 divisors, whose sum is σ = 16501362. Its totient is φ = 16501360.

The previous prime is 16501351. The next prime is 16501369. The reversal of 16501361 is 16310561.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12737761 + 3763600 = 3569^2 + 1940^2 .

It is a cyclic number.

It is not a de Polignac number, because 16501361 - 2¹⁴ = 16484977 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16501369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8250680 + 8250681.

It is an arithmetic number, because the mean of its divisors is an integer number (8250681).

Almost surely, 2^16501361 is an apocalyptic number.

It is an amenable number.

16501361 is a deficient number, since it is larger than the sum of its proper divisors (1).

16501361 is an equidigital number, since it uses as much as digits as its factorization.

16501361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 16501361 is about 4062.1867263827. The cubic root of 16501361 is about 254.5891680144.

The spelling of 16501361 in words is "sixteen million, five hundred one thousand, three hundred sixty-one".