51032217 has 8 divisors (see below), whose sum is σ = 68155360. Its totient is φ = 33965280.

The previous prime is 51032207. The next prime is 51032221. The reversal of 51032217 is 71223015.

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

It is not a de Polignac number, because 51032217 - 2⁶ = 51032153 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51032193 and 51032202.

It is not an unprimeable number, because it can be changed into a prime (51032207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11884 + ... + 15597.

It is an arithmetic number, because the mean of its divisors is an integer number (8519420).

Almost surely, 2^51032217 is an apocalyptic number.

It is an amenable number.

51032217 is a deficient number, since it is larger than the sum of its proper divisors (17123143).

51032217 is a wasteful number, since it uses less digits than its factorization.

51032217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28103.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 51032217 is about 7143.6837136032. The cubic root of 51032217 is about 370.9210483862.

The spelling of 51032217 in words is "fifty-one million, thirty-two thousand, two hundred seventeen".