51122560 has 96 divisors (see below), whose sum is σ = 128605680. Its totient is φ = 19430400.

The previous prime is 51122551. The next prime is 51122573. The reversal of 51122560 is 6522115.

It is a super-2 number, since 2×51122560² = 5227032281907200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 338485 + ... + 338635.

Almost surely, 2^51122560 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 51122560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64302840).

51122560 is an abundant number, since it is smaller than the sum of its proper divisors (77483120).

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

51122560 is a wasteful number, since it uses less digits than its factorization.

51122560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 181 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 51122560 is about 7150.0041958030. The cubic root of 51122560 is about 371.1398014746.

Adding to 51122560 its reverse (6522115), we get a palindrome (57644675).

The spelling of 51122560 in words is "fifty-one million, one hundred twenty-two thousand, five hundred sixty".