51000693 has 8 divisors (see below), whose sum is σ = 71580000. Its totient is φ = 32210928.

The previous prime is 51000667. The next prime is 51000707. The reversal of 51000693 is 39600015.

51000693 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 not a de Polignac number, because 51000693 - 2⁸ = 51000437 is a prime.

51000693 is a modest number, since divided by 693 gives 51 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51000643) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 447318 + ... + 447431.

It is an arithmetic number, because the mean of its divisors is an integer number (8947500).

Almost surely, 2^51000693 is an apocalyptic number.

It is an amenable number.

51000693 is a deficient number, since it is larger than the sum of its proper divisors (20579307).

51000693 is a wasteful number, since it uses less digits than its factorization.

51000693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894771.

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 51000693 is about 7141.4769480829. The cubic root of 51000693 is about 370.8446566196.

The spelling of 51000693 in words is "fifty-one million, six hundred ninety-three", and thus it is an aban number.