51162928 has 40 divisors (see below), whose sum is σ = 106332480. Its totient is φ = 23761920.

The previous prime is 51162913. The next prime is 51162959. The reversal of 51162928 is 82926115.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 51162893 and 51162902.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20298 + ... + 22678.

It is an arithmetic number, because the mean of its divisors is an integer number (2658312).

Almost surely, 2^51162928 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 51162928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53166240).

51162928 is an abundant number, since it is smaller than the sum of its proper divisors (55169552).

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

51162928 is a wasteful number, since it uses less digits than its factorization.

51162928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2485 (or 2479 counting only the distinct ones).

The product of its digits is 8640, while the sum is 34.

The square root of 51162928 is about 7152.8265741593. The cubic root of 51162928 is about 371.2374637054.

The spelling of 51162928 in words is "fifty-one million, one hundred sixty-two thousand, nine hundred twenty-eight".