16201651 has 4 divisors (see below), whose sum is σ = 16350400. Its totient is φ = 16052904.

The previous prime is 16201621. The next prime is 16201657. The reversal of 16201651 is 15610261.

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 16201651 - 2⁹ = 16201139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16201657) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 74211 + ... + 74428.

It is an arithmetic number, because the mean of its divisors is an integer number (4087600).

Almost surely, 2^16201651 is an apocalyptic number.

16201651 is a deficient number, since it is larger than the sum of its proper divisors (148749).

16201651 is a wasteful number, since it uses less digits than its factorization.

16201651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148748.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 16201651 is about 4025.1274513983. The cubic root of 16201651 is about 253.0383950228.

The spelling of 16201651 in words is "sixteen million, two hundred one thousand, six hundred fifty-one".