16241591 has 2 divisors, whose sum is σ = 16241592. Its totient is φ = 16241590.

The previous prime is 16241587. The next prime is 16241593. The reversal of 16241591 is 19514261.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16241591 - 2² = 16241587 is a prime.

It is a super-2 number, since 2×16241591² = 527578556422562, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 16241593, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_1045658 and since 16241591 and 1045658 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16241593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8120795 + 8120796.

It is an arithmetic number, because the mean of its divisors is an integer number (8120796).

Almost surely, 2^16241591 is an apocalyptic number.

16241591 is a deficient number, since it is larger than the sum of its proper divisors (1).

16241591 is an equidigital number, since it uses as much as digits as its factorization.

16241591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 29.

The square root of 16241591 is about 4030.0857310980. The cubic root of 16241591 is about 253.2461528657.

The spelling of 16241591 in words is "sixteen million, two hundred forty-one thousand, five hundred ninety-one".