16481247 has 4 divisors (see below), whose sum is σ = 21975000. Its totient is φ = 10987496.

The previous prime is 16481239. The next prime is 16481273. The reversal of 16481247 is 74218461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74218461 = 3 ⋅24739487.

It is a cyclic number.

It is not a de Polignac number, because 16481247 - 2³ = 16481239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16481207) 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, 2746872 + ... + 2746877.

It is an arithmetic number, because the mean of its divisors is an integer number (5493750).

Almost surely, 2^16481247 is an apocalyptic number.

16481247 is a deficient number, since it is larger than the sum of its proper divisors (5493753).

16481247 is an equidigital number, since it uses as much as digits as its factorization.

16481247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5493752.

The product of its digits is 10752, while the sum is 33.

The square root of 16481247 is about 4059.7102113328. The cubic root of 16481247 is about 254.4856838519.

The spelling of 16481247 in words is "sixteen million, four hundred eighty-one thousand, two hundred forty-seven".