51707222 has 8 divisors (see below), whose sum is σ = 88640976. Its totient is φ = 22160232.

The previous prime is 51707221. The next prime is 51707231. The reversal of 51707222 is 22270715.

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 = 51707191 and 51707200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51707221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1846673 + ... + 1846700.

It is an arithmetic number, because the mean of its divisors is an integer number (11080122).

Almost surely, 2^51707222 is an apocalyptic number.

51707222 is a deficient number, since it is larger than the sum of its proper divisors (36933754).

51707222 is a wasteful number, since it uses less digits than its factorization.

51707222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3693382.

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 51707222 is about 7190.7733937317. The cubic root of 51707222 is about 372.5492858529.

Adding to 51707222 its reverse (22270715), we get a palindrome (73977937).

The spelling of 51707222 in words is "fifty-one million, seven hundred seven thousand, two hundred twenty-two".