51894538 has 8 divisors (see below), whose sum is σ = 78402240. Its totient is φ = 25760460.

The previous prime is 51894499. The next prime is 51894541. The reversal of 51894538 is 83549815.

51894538 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 = 51894494 and 51894503.

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, 93058 + ... + 93613.

It is an arithmetic number, because the mean of its divisors is an integer number (9800280).

Almost surely, 2^51894538 is an apocalyptic number.

51894538 is a deficient number, since it is larger than the sum of its proper divisors (26507702).

51894538 is a wasteful number, since it uses less digits than its factorization.

51894538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186812.

The product of its digits is 172800, while the sum is 43.

The square root of 51894538 is about 7203.7863655164. The cubic root of 51894538 is about 372.9986127930.

The spelling of 51894538 in words is "fifty-one million, eight hundred ninety-four thousand, five hundred thirty-eight".