51722105 has 8 divisors (see below), whose sum is σ = 64068864. Its totient is φ = 40042800.

The previous prime is 51722089. The next prime is 51722107. The reversal of 51722105 is 50122715.

It is a happy number.

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

It is not a de Polignac number, because 51722105 - 2⁴ = 51722089 is a prime.

It is a super-2 number, since 2×51722105² = 5350352291262050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51722107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166691 + ... + 167000.

It is an arithmetic number, because the mean of its divisors is an integer number (8008608).

Almost surely, 2^51722105 is an apocalyptic number.

It is an amenable number.

51722105 is a deficient number, since it is larger than the sum of its proper divisors (12346759).

51722105 is a wasteful number, since it uses less digits than its factorization.

51722105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333727.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 51722105 is about 7191.8081870973. The cubic root of 51722105 is about 372.5850263092.

It can be divided in two parts, 517 and 22105, that added together give a palindrome (22622).

The spelling of 51722105 in words is "fifty-one million, seven hundred twenty-two thousand, one hundred five".