16001087 has 4 divisors (see below), whose sum is σ = 16028400. Its totient is φ = 15973776.

The previous prime is 16001081. The next prime is 16001107. The reversal of 16001087 is 78010061.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16001087 - 2¹⁶ = 15935551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16001081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12758 + ... + 13955.

It is an arithmetic number, because the mean of its divisors is an integer number (4007100).

Almost surely, 2^16001087 is an apocalyptic number.

16001087 is a deficient number, since it is larger than the sum of its proper divisors (27313).

16001087 is an equidigital number, since it uses as much as digits as its factorization.

16001087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27312.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 16001087 is about 4000.1358726923. The cubic root of 16001087 is about 251.9899162422.

The spelling of 16001087 in words is "sixteen million, one thousand, eighty-seven".