16397051 has 4 divisors (see below), whose sum is σ = 17887704. Its totient is φ = 14906400.

The previous prime is 16397039. The next prime is 16397053. The reversal of 16397051 is 15079361.

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 16397051 - 2⁶ = 16396987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16396999 and 16397017.

It is not an unprimeable number, because it can be changed into a prime (16397053) 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, 745310 + ... + 745331.

It is an arithmetic number, because the mean of its divisors is an integer number (4471926).

Almost surely, 2^16397051 is an apocalyptic number.

16397051 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16397051 is a deficient number, since it is larger than the sum of its proper divisors (1490653).

16397051 is a wasteful number, since it uses less digits than its factorization.

16397051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490652.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 16397051 is about 4049.3272280713. The cubic root of 16397051 is about 254.0515891244.

The spelling of 16397051 in words is "sixteen million, three hundred ninety-seven thousand, fifty-one".