51953928 has 64 divisors (see below), whose sum is σ = 141523200. Its totient is φ = 15797760.

The previous prime is 51953899. The next prime is 51953947. The reversal of 51953928 is 82935915.

It is a self number, because there is not a number n which added to its sum of digits gives 51953928.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26833 + ... + 28703.

It is an arithmetic number, because the mean of its divisors is an integer number (2211300).

Almost surely, 2^51953928 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 51953928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70761600).

51953928 is an abundant number, since it is smaller than the sum of its proper divisors (89569272).

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

51953928 is a wasteful number, since it uses less digits than its factorization.

51953928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982 (or 1978 counting only the distinct ones).

The product of its digits is 97200, while the sum is 42.

The square root of 51953928 is about 7207.9073245985. The cubic root of 51953928 is about 373.1408496139.

The spelling of 51953928 in words is "fifty-one million, nine hundred fifty-three thousand, nine hundred twenty-eight".