51628894 has 8 divisors (see below), whose sum is σ = 78756120. Its totient is φ = 25376856.

The previous prime is 51628883. The next prime is 51628921. The reversal of 51628894 is 49882615.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 51628894.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218649 + ... + 218884.

It is an arithmetic number, because the mean of its divisors is an integer number (9844515).

Almost surely, 2^51628894 is an apocalyptic number.

51628894 is a deficient number, since it is larger than the sum of its proper divisors (27127226).

51628894 is a wasteful number, since it uses less digits than its factorization.

51628894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437594.

The product of its digits is 138240, while the sum is 43.

The square root of 51628894 is about 7185.3249056671. The cubic root of 51628894 is about 372.3610736678.

The spelling of 51628894 in words is "fifty-one million, six hundred twenty-eight thousand, eight hundred ninety-four".