51787442 has 8 divisors (see below), whose sum is σ = 88778496. Its totient is φ = 22194612.

The previous prime is 51787429. The next prime is 51787493. The reversal of 51787442 is 24478715.

51787442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 51787396 and 51787405.

It is an unprimeable number.

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, 1849538 + ... + 1849565.

It is an arithmetic number, because the mean of its divisors is an integer number (11097312).

Almost surely, 2^51787442 is an apocalyptic number.

51787442 is a deficient number, since it is larger than the sum of its proper divisors (36991054).

51787442 is a wasteful number, since it uses less digits than its factorization.

51787442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3699112.

The product of its digits is 62720, while the sum is 38.

The square root of 51787442 is about 7196.3492133164. The cubic root of 51787442 is about 372.7418473597.

The spelling of 51787442 in words is "fifty-one million, seven hundred eighty-seven thousand, four hundred forty-two".