16397057 has 4 divisors (see below), whose sum is σ = 17260080. Its totient is φ = 15534036.

The previous prime is 16397053. The next prime is 16397063. The reversal of 16397057 is 75079361.

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.

It is a cyclic number.

It is not a de Polignac number, because 16397057 - 2² = 16397053 is a prime.

It is a super-2 number, since 2×16397057² = 537726956522498, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16397057.

It is not an unprimeable number, because it can be changed into a prime (16397053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431483 + ... + 431520.

It is an arithmetic number, because the mean of its divisors is an integer number (4315020).

Almost surely, 2^16397057 is an apocalyptic number.

It is an amenable number.

16397057 is a deficient number, since it is larger than the sum of its proper divisors (863023).

16397057 is an equidigital number, since it uses as much as digits as its factorization.

16397057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863022.

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 16397057 is about 4049.3279689351. The cubic root of 16397057 is about 254.0516201119.

The spelling of 16397057 in words is "sixteen million, three hundred ninety-seven thousand, fifty-seven".