51722715 has 16 divisors (see below), whose sum is σ = 90279936. Its totient is φ = 25077600.

The previous prime is 51722711. The next prime is 51722717.

51722715 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51722715 - 2² = 51722711 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51722711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156571 + ... + 156900.

It is an arithmetic number, because the mean of its divisors is an integer number (5642496).

Almost surely, 2^51722715 is an apocalyptic number.

51722715 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51722715 is a deficient number, since it is larger than the sum of its proper divisors (38557221).

51722715 is a wasteful number, since it uses less digits than its factorization.

51722715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313490.

The product of its digits is 4900, while the sum is 30.

The square root of 51722715 is about 7191.8505963347. The cubic root of 51722715 is about 372.5864910342.

It can be divided in two parts, 5172 and 2715, that added together give a palindrome (7887).

The spelling of 51722715 in words is "fifty-one million, seven hundred twenty-two thousand, seven hundred fifteen".