16091553 has 8 divisors (see below), whose sum is σ = 21600000. Its totient is φ = 10655408.

The previous prime is 16091533. The next prime is 16091597. The reversal of 16091553 is 35519061.

16091553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16091553 - 2¹⁷ = 15960481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16091553.

It is not an unprimeable number, because it can be changed into a prime (16091533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17553 + ... + 18446.

It is an arithmetic number, because the mean of its divisors is an integer number (2700000).

Almost surely, 2^16091553 is an apocalyptic number.

It is an amenable number.

16091553 is a deficient number, since it is larger than the sum of its proper divisors (5508447).

16091553 is a wasteful number, since it uses less digits than its factorization.

16091553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36151.

The product of its (nonzero) digits is 4050, while the sum is 30.

The square root of 16091553 is about 4011.4278006715. The cubic root of 16091553 is about 252.4639192964.

The spelling of 16091553 in words is "sixteen million, ninety-one thousand, five hundred fifty-three".