16265591 has 2 divisors, whose sum is σ = 16265592. Its totient is φ = 16265590.

The previous prime is 16265581. The next prime is 16265597. The reversal of 16265591 is 19556261.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16265591 - 2⁶ = 16265527 is a prime.

It is a Chen prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16265597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8132795 + 8132796.

It is an arithmetic number, because the mean of its divisors is an integer number (8132796).

Almost surely, 2^16265591 is an apocalyptic number.

16265591 is a deficient number, since it is larger than the sum of its proper divisors (1).

16265591 is an equidigital number, since it uses as much as digits as its factorization.

16265591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16200, while the sum is 35.

The square root of 16265591 is about 4033.0622360683. The cubic root of 16265591 is about 253.3708310530.

The spelling of 16265591 in words is "sixteen million, two hundred sixty-five thousand, five hundred ninety-one".