16457057 has 4 divisors (see below), whose sum is σ = 16466580. Its totient is φ = 16447536.

The previous prime is 16457039. The next prime is 16457087. The reversal of 16457057 is 75075461.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 75075461 = 29 ⋅2588809.

It can be written as a sum of positive squares in 2 ways, for example, as 5494336 + 10962721 = 2344^2 + 3311^2 .

It is a cyclic number.

It is not a de Polignac number, because 16457057 - 2⁸ = 16456801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16457087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1358 + ... + 5895.

It is an arithmetic number, because the mean of its divisors is an integer number (4116645).

Almost surely, 2^16457057 is an apocalyptic number.

It is an amenable number.

16457057 is a deficient number, since it is larger than the sum of its proper divisors (9523).

16457057 is an equidigital number, since it uses as much as digits as its factorization.

16457057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9522.

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 16457057 is about 4056.7298406475. The cubic root of 16457057 is about 254.3611175709.

The spelling of 16457057 in words is "sixteen million, four hundred fifty-seven thousand, fifty-seven".