51752320 has 32 divisors (see below), whose sum is σ = 123721920. Its totient is φ = 20700672.

The previous prime is 51752303. The next prime is 51752353. The reversal of 51752320 is 2325715.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39792 + ... + 41071.

It is an arithmetic number, because the mean of its divisors is an integer number (3866310).

Almost surely, 2^51752320 is an apocalyptic number.

It is an amenable number.

51752320 is an abundant number, since it is smaller than the sum of its proper divisors (71969600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51752320 is an equidigital number, since it uses as much as digits as its factorization.

51752320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80882 (or 80870 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 51752320 is about 7193.9085343087. The cubic root of 51752320 is about 372.6575643798.

It can be divided in two parts, 5 and 1752320, that multiplied together give a square (8761600 = 2960²).

The spelling of 51752320 in words is "fifty-one million, seven hundred fifty-two thousand, three hundred twenty".