51975424 has 36 divisors (see below), whose sum is σ = 107340660. Its totient is φ = 25088000.

The previous prime is 51975403. The next prime is 51975439. The reversal of 51975424 is 42457915.

It can be written as a sum of positive squares in 2 ways, for example, as 24601600 + 27373824 = 4960^2 + 5232^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3924 + ... + 10924.

It is an arithmetic number, because the mean of its divisors is an integer number (2981685).

Almost surely, 2^51975424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51975424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53670330).

51975424 is an abundant number, since it is smaller than the sum of its proper divisors (55365236).

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

51975424 is an equidigital number, since it uses as much as digits as its factorization.

51975424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7046 (or 7032 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The square root of 51975424 is about 7209.3983105388. The cubic root of 51975424 is about 373.1923050093.

The spelling of 51975424 in words is "fifty-one million, nine hundred seventy-five thousand, four hundred twenty-four".