51722523 has 8 divisors (see below), whose sum is σ = 76626000. Its totient is φ = 34481664.

The previous prime is 51722501. The next prime is 51722533. The reversal of 51722523 is 32522715.

51722523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51722523 - 2⁸ = 51722267 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1915649 = 51722523 / (5 + 1 + 7 + 2 + 2 + 5 + 2 + 3).

It is not an unprimeable number, because it can be changed into a prime (51722533) by changing a digit.

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, 957798 + ... + 957851.

It is an arithmetic number, because the mean of its divisors is an integer number (9578250).

Almost surely, 2^51722523 is an apocalyptic number.

51722523 is a deficient number, since it is larger than the sum of its proper divisors (24903477).

51722523 is a wasteful number, since it uses less digits than its factorization.

51722523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1915658 (or 1915652 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 51722523 is about 7191.8372478804. The cubic root of 51722523 is about 372.5860300072.

The spelling of 51722523 in words is "fifty-one million, seven hundred twenty-two thousand, five hundred twenty-three".