51560224 has 48 divisors (see below), whose sum is σ = 107805600. Its totient is φ = 24205824.

The previous prime is 51560221. The next prime is 51560233. The reversal of 51560224 is 42206515.

It is not an unprimeable number, because it can be changed into a prime (51560221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82987 + ... + 83605.

It is an arithmetic number, because the mean of its divisors is an integer number (2245950).

Almost surely, 2^51560224 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 51560224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53902800).

51560224 is an abundant number, since it is smaller than the sum of its proper divisors (56245376).

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

51560224 is a wasteful number, since it uses less digits than its factorization.

51560224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785 (or 777 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 51560224 is about 7180.5448261257. The cubic root of 51560224 is about 372.1959117596.

Adding to 51560224 its reverse (42206515), we get a palindrome (93766739).

The spelling of 51560224 in words is "fifty-one million, five hundred sixty thousand, two hundred twenty-four".