51032861 has 8 divisors (see below), whose sum is σ = 58947264. Its totient is φ = 43664320.

The previous prime is 51032809. The next prime is 51032887. The reversal of 51032861 is 16823015.

51032861 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 cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51032861 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51032861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51032161) 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, 136265 + ... + 136638.

It is an arithmetic number, because the mean of its divisors is an integer number (7368408).

Almost surely, 2^51032861 is an apocalyptic number.

It is an amenable number.

51032861 is a deficient number, since it is larger than the sum of its proper divisors (7914403).

51032861 is a wasteful number, since it uses less digits than its factorization.

51032861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272931.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 51032861 is about 7143.7287882450. The cubic root of 51032861 is about 370.9226086564.

Adding to 51032861 its reverse (16823015), we get a palindrome (67855876).

The spelling of 51032861 in words is "fifty-one million, thirty-two thousand, eight hundred sixty-one".