51745628 has 48 divisors (see below), whose sum is σ = 103420800. Its totient is φ = 22438080.

The previous prime is 51745627. The next prime is 51745643. The reversal of 51745628 is 82654715.

51745628 = 352² + 353² + ... + 583².

51745628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51745628² = 5355220034228768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51745591 and 51745600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51745627) 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 15 ways as a sum of consecutive naturals, for example, 136343 + ... + 136721.

It is an arithmetic number, because the mean of its divisors is an integer number (2154600).

Almost surely, 2^51745628 is an apocalyptic number.

51745628 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

51745628 is a deficient number, since it is larger than the sum of its proper divisors (51675172).

51745628 is a wasteful number, since it uses less digits than its factorization.

51745628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530 (or 528 counting only the distinct ones).

The product of its digits is 67200, while the sum is 38.

The square root of 51745628 is about 7193.4434035446. The cubic root of 51745628 is about 372.6415011262.

The spelling of 51745628 in words is "fifty-one million, seven hundred forty-five thousand, six hundred twenty-eight".