16254009 has 6 divisors (see below), whose sum is σ = 23478026. Its totient is φ = 10836000.

The previous prime is 16254001. The next prime is 16254019. The reversal of 16254009 is 90045261.

It can be written as a sum of positive squares in only one way, i.e., 9903609 + 6350400 = 3147^2 + 2520^2 .

It is not a de Polignac number, because 16254009 - 2³ = 16254001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16254001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 902992 + ... + 903009.

Almost surely, 2^16254009 is an apocalyptic number.

It is an amenable number.

16254009 is a deficient number, since it is larger than the sum of its proper divisors (7224017).

16254009 is a wasteful number, since it uses less digits than its factorization.

16254009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806007 (or 1806004 counting only the distinct ones).

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

The square root of 16254009 is about 4031.6260987349. The cubic root of 16254009 is about 253.3106787605.

The spelling of 16254009 in words is "sixteen million, two hundred fifty-four thousand, nine".