16261745 has 4 divisors (see below), whose sum is σ = 19514100. Its totient is φ = 13009392.

The previous prime is 16261733. The next prime is 16261787. The reversal of 16261745 is 54716261.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4857616 + 11404129 = 2204^2 + 3377^2 .

It is a cyclic number.

It is not a de Polignac number, because 16261745 - 2²⁰ = 15213169 is a prime.

It is an unprimeable number.

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, 1626170 + ... + 1626179.

It is an arithmetic number, because the mean of its divisors is an integer number (4878525).

Almost surely, 2^16261745 is an apocalyptic number.

It is an amenable number.

16261745 is a deficient number, since it is larger than the sum of its proper divisors (3252355).

16261745 is an equidigital number, since it uses as much as digits as its factorization.

16261745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3252354.

The product of its digits is 10080, while the sum is 32.

The square root of 16261745 is about 4032.5853989717. The cubic root of 16261745 is about 253.3508596293.

The spelling of 16261745 in words is "sixteen million, two hundred sixty-one thousand, seven hundred forty-five".