51747953 has 4 divisors (see below), whose sum is σ = 53997888. Its totient is φ = 49498020.

The previous prime is 51747937. The next prime is 51747973. The reversal of 51747953 is 35974715.

51747953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51747953 - 2⁴ = 51747937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51747953.

It is not an unprimeable number, because it can be changed into a prime (51747973) 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 3 ways as a sum of consecutive naturals, for example, 1124933 + ... + 1124978.

It is an arithmetic number, because the mean of its divisors is an integer number (13499472).

Almost surely, 2^51747953 is an apocalyptic number.

It is an amenable number.

51747953 is a deficient number, since it is larger than the sum of its proper divisors (2249935).

51747953 is a wasteful number, since it uses less digits than its factorization.

51747953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2249934.

The product of its digits is 132300, while the sum is 41.

The square root of 51747953 is about 7193.6050072269. The cubic root of 51747953 is about 372.6470821357.

The spelling of 51747953 in words is "fifty-one million, seven hundred forty-seven thousand, nine hundred fifty-three".