16261057 has 4 divisors (see below), whose sum is σ = 16270276. Its totient is φ = 16251840.

The previous prime is 16261001. The next prime is 16261073. The reversal of 16261057 is 75016261.

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.

It can be written as a sum of positive squares in 2 ways, for example, as 9480241 + 6780816 = 3079^2 + 2604^2 .

It is a cyclic number.

It is not a de Polignac number, because 16261057 - 2⁷ = 16260929 is a prime.

It is the 4033-rd Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16261087) by changing a digit.

It is a nontrivial repunit in base 4032.

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, 1044 + ... + 5797.

It is an arithmetic number, because the mean of its divisors is an integer number (4067569).

Almost surely, 2^16261057 is an apocalyptic number.

It is an amenable number.

16261057 is a deficient number, since it is larger than the sum of its proper divisors (9219).

16261057 is an equidigital number, since it uses as much as digits as its factorization.

16261057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9218.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 16261057 is about 4032.5000929944. The cubic root of 16261057 is about 253.3472866660.

The spelling of 16261057 in words is "sixteen million, two hundred sixty-one thousand, fifty-seven".