51501760 has 56 divisors (see below), whose sum is σ = 123352560. Its totient is φ = 20481024.

The previous prime is 51501739. The next prime is 51501773. The reversal of 51501760 is 6710515.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72286 + ... + 72994.

Almost surely, 2^51501760 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 51501760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61676280).

51501760 is an abundant number, since it is smaller than the sum of its proper divisors (71850800).

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

51501760 is a wasteful number, since it uses less digits than its factorization.

51501760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953 (or 943 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 51501760 is about 7176.4726711665. The cubic root of 51501760 is about 372.0551812388.

The spelling of 51501760 in words is "fifty-one million, five hundred one thousand, seven hundred sixty".