51044401 has 4 divisors (see below), whose sum is σ = 51058804. Its totient is φ = 51030000.

The previous prime is 51044377. The next prime is 51044417. The reversal of 51044401 is 10444015.

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 45212176 + 5832225 = 6724^2 + 2415^2 .

It is a cyclic number.

It is not a de Polignac number, because 51044401 - 2⁵ = 51044369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51044471) 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, 2251 + ... + 10351.

It is an arithmetic number, because the mean of its divisors is an integer number (12764701).

Almost surely, 2^51044401 is an apocalyptic number.

It is an amenable number.

51044401 is a deficient number, since it is larger than the sum of its proper divisors (14403).

51044401 is an equidigital number, since it uses as much as digits as its factorization.

51044401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14402.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 51044401 is about 7144.5364440249. The cubic root of 51044401 is about 370.9505653117.

Adding to 51044401 its reverse (10444015), we get a palindrome (61488416).

The spelling of 51044401 in words is "fifty-one million, forty-four thousand, four hundred one".