16251066 has 48 divisors (see below), whose sum is σ = 38964744. Its totient is φ = 4862592.

The previous prime is 16251043. The next prime is 16251113. The reversal of 16251066 is 66015261.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14861025 + 1390041 = 3855^2 + 1179^2 .

It is a super-2 number, since 2×16251066² = 528194292272712, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7720 + ... + 9596.

Almost surely, 2^16251066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16251066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19482372).

16251066 is an abundant number, since it is smaller than the sum of its proper divisors (22713678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16251066 is a wasteful number, since it uses less digits than its factorization.

16251066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1935 (or 1932 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 16251066 is about 4031.2610930080. The cubic root of 16251066 is about 253.2953894387.

The spelling of 16251066 in words is "sixteen million, two hundred fifty-one thousand, sixty-six".