51044887 has 4 divisors (see below), whose sum is σ = 53731480. Its totient is φ = 48358296.

The previous prime is 51044839. The next prime is 51044899. The reversal of 51044887 is 78844015.

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

It is a cyclic number.

It is not a de Polignac number, because 51044887 - 2⁷ = 51044759 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 (51044837) 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, 1343268 + ... + 1343305.

It is an arithmetic number, because the mean of its divisors is an integer number (13432870).

Almost surely, 2^51044887 is an apocalyptic number.

51044887 is a deficient number, since it is larger than the sum of its proper divisors (2686593).

51044887 is a wasteful number, since it uses less digits than its factorization.

51044887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2686592.

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 51044887 is about 7144.5704559476. The cubic root of 51044887 is about 370.9517425965.

The spelling of 51044887 in words is "fifty-one million, forty-four thousand, eight hundred eighty-seven".