16454987 has 4 divisors (see below), whose sum is σ = 16540440. Its totient is φ = 16369536.

The previous prime is 16454953. The next prime is 16455059. The reversal of 16454987 is 78945461.

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 16454987 - 2¹² = 16450891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16454917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42437 + ... + 42822.

It is an arithmetic number, because the mean of its divisors is an integer number (4135110).

Almost surely, 2^16454987 is an apocalyptic number.

16454987 is a deficient number, since it is larger than the sum of its proper divisors (85453).

16454987 is an equidigital number, since it uses as much as digits as its factorization.

16454987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85452.

The product of its digits is 241920, while the sum is 44.

The square root of 16454987 is about 4056.4747010181. The cubic root of 16454987 is about 254.3504524483.

The spelling of 16454987 in words is "sixteen million, four hundred fifty-four thousand, nine hundred eighty-seven".