51482787 has 4 divisors (see below), whose sum is σ = 68643720. Its totient is φ = 34321856.

The previous prime is 51482779. The next prime is 51482791. The reversal of 51482787 is 78728415.

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 51482787 - 2³ = 51482779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51482707) 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, 8580462 + ... + 8580467.

It is an arithmetic number, because the mean of its divisors is an integer number (17160930).

Almost surely, 2^51482787 is an apocalyptic number.

51482787 is a deficient number, since it is larger than the sum of its proper divisors (17160933).

51482787 is a wasteful number, since it uses less digits than its factorization.

51482787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17160932.

The product of its digits is 125440, while the sum is 42.

The square root of 51482787 is about 7175.1506604391. The cubic root of 51482787 is about 372.0094878491.

The spelling of 51482787 in words is "fifty-one million, four hundred eighty-two thousand, seven hundred eighty-seven".