51722089 has 2 divisors, whose sum is σ = 51722090. Its totient is φ = 51722088.

The previous prime is 51722059. The next prime is 51722107. The reversal of 51722089 is 98022715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27878400 + 23843689 = 5280^2 + 4883^2 .

It is a cyclic number.

It is not a de Polignac number, because 51722089 - 2¹⁵ = 51689321 is a prime.

It is not a weakly prime, because it can be changed into another prime (51722029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25861044 + 25861045.

It is an arithmetic number, because the mean of its divisors is an integer number (25861045).

Almost surely, 2^51722089 is an apocalyptic number.

It is an amenable number.

51722089 is a deficient number, since it is larger than the sum of its proper divisors (1).

51722089 is an equidigital number, since it uses as much as digits as its factorization.

51722089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 51722089 is about 7191.8070747205. The cubic root of 51722089 is about 372.5849878900.

The spelling of 51722089 in words is "fifty-one million, seven hundred twenty-two thousand, eighty-nine".