51722445 has 8 divisors (see below), whose sum is σ = 82755936. Its totient is φ = 27585296.

The previous prime is 51722417. The next prime is 51722467. The reversal of 51722445 is 54422715.

51722445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 51722445 - 2⁵ = 51722413 is a prime.

It is a super-2 number, since 2×51722445² = 5350422633556050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1724067 + ... + 1724096.

It is an arithmetic number, because the mean of its divisors is an integer number (10344492).

Almost surely, 2^51722445 is an apocalyptic number.

It is an amenable number.

51722445 is a deficient number, since it is larger than the sum of its proper divisors (31033491).

51722445 is a wasteful number, since it uses less digits than its factorization.

51722445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3448171.

The product of its digits is 11200, while the sum is 30.

The square root of 51722445 is about 7191.8318250638. The cubic root of 51722445 is about 372.5858427147.

The spelling of 51722445 in words is "fifty-one million, seven hundred twenty-two thousand, four hundred forty-five".