51566752 has 48 divisors (see below), whose sum is σ = 105575400. Its totient is φ = 24772608.

The previous prime is 51566747. The next prime is 51566771. The reversal of 51566752 is 25766515.

It can be written as a sum of positive squares in 4 ways, for example, as 50637456 + 929296 = 7116^2 + 964^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

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, 114624 + ... + 115072.

Almost surely, 2^51566752 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 51566752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52787700).

51566752 is an abundant number, since it is smaller than the sum of its proper divisors (54008648).

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

51566752 is a wasteful number, since it uses less digits than its factorization.

51566752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593 (or 585 counting only the distinct ones).

The product of its digits is 63000, while the sum is 37.

The square root of 51566752 is about 7180.9993733463. Note that the first 3 decimals coincide. The cubic root of 51566752 is about 372.2116189087.

The spelling of 51566752 in words is "fifty-one million, five hundred sixty-six thousand, seven hundred fifty-two".