51320192 has 128 divisors (see below), whose sum is σ = 131604480. Its totient is φ = 19353600.

The previous prime is 51320189. The next prime is 51320201. The reversal of 51320192 is 29102315.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

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, 404033 + ... + 404159.

It is an arithmetic number, because the mean of its divisors is an integer number (1028160).

Almost surely, 2^51320192 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 51320192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65802240).

51320192 is an abundant number, since it is smaller than the sum of its proper divisors (80284288).

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

51320192 is a wasteful number, since it uses less digits than its factorization.

51320192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 51320192 is about 7163.8112761295. The cubic root of 51320192 is about 371.6174430802.

The spelling of 51320192 in words is "fifty-one million, three hundred twenty thousand, one hundred ninety-two".