51266443 has 4 divisors (see below), whose sum is σ = 51300648. Its totient is φ = 51232240.

The previous prime is 51266437. The next prime is 51266477. The reversal of 51266443 is 34466215.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51266443 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51266843) 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, 14746 + ... + 17887.

It is an arithmetic number, because the mean of its divisors is an integer number (12825162).

Almost surely, 2^51266443 is an apocalyptic number.

51266443 is a deficient number, since it is larger than the sum of its proper divisors (34205).

51266443 is a wasteful number, since it uses less digits than its factorization.

51266443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34204.

The product of its digits is 17280, while the sum is 31.

The square root of 51266443 is about 7160.0588684731. The cubic root of 51266443 is about 371.4876628231.

The spelling of 51266443 in words is "fifty-one million, two hundred sixty-six thousand, four hundred forty-three".