16545057 has 4 divisors (see below), whose sum is σ = 22060080. Its totient is φ = 11030036.

The previous prime is 16545013. The next prime is 16545071. The reversal of 16545057 is 75054561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75054561 = 3 ⋅25018187.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16545057 is a prime.

It is a super-2 number, since 2×16545057² = 547477822266498, which contains 22 as substring.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (16545007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2757507 + ... + 2757512.

It is an arithmetic number, because the mean of its divisors is an integer number (5515020).

Almost surely, 2^16545057 is an apocalyptic number.

It is an amenable number.

16545057 is a deficient number, since it is larger than the sum of its proper divisors (5515023).

16545057 is an equidigital number, since it uses as much as digits as its factorization.

16545057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5515022.

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 16545057 is about 4067.5615545435. The cubic root of 16545057 is about 254.8136893608.

The spelling of 16545057 in words is "sixteen million, five hundred forty-five thousand, fifty-seven".