16427251 has 4 divisors (see below), whose sum is σ = 16510000. Its totient is φ = 16344504.

The previous prime is 16427249. The next prime is 16427273. The reversal of 16427251 is 15272461.

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 16427251 - 2¹ = 16427249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16427291) 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, 41076 + ... + 41473.

It is an arithmetic number, because the mean of its divisors is an integer number (4127500).

Almost surely, 2^16427251 is an apocalyptic number.

16427251 is a deficient number, since it is larger than the sum of its proper divisors (82749).

16427251 is an equidigital number, since it uses as much as digits as its factorization.

16427251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82748.

The product of its digits is 3360, while the sum is 28.

The square root of 16427251 is about 4053.0545271437. The cubic root of 16427251 is about 254.2074637489.

The spelling of 16427251 in words is "sixteen million, four hundred twenty-seven thousand, two hundred fifty-one".