16256461 has 4 divisors (see below), whose sum is σ = 17506972. Its totient is φ = 15005952.

The previous prime is 16256413. The next prime is 16256483. The reversal of 16256461 is 16465261.

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 10278436 + 5978025 = 3206^2 + 2445^2 .

It is not a de Polignac number, because 16256461 - 2⁷ = 16256333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16256491) by changing a digit.

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, 625236 + ... + 625261.

It is an arithmetic number, because the mean of its divisors is an integer number (4376743).

Almost surely, 2^16256461 is an apocalyptic number.

It is an amenable number.

16256461 is a deficient number, since it is larger than the sum of its proper divisors (1250511).

16256461 is a wasteful number, since it uses less digits than its factorization.

16256461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250510.

The product of its digits is 8640, while the sum is 31.

The square root of 16256461 is about 4031.9301829273. The cubic root of 16256461 is about 253.3234158552.

The spelling of 16256461 in words is "sixteen million, two hundred fifty-six thousand, four hundred sixty-one".