51800736 has 48 divisors (see below), whose sum is σ = 146440224. Its totient is φ = 15938304.

The previous prime is 51800731. The next prime is 51800789. The reversal of 51800736 is 63700815.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (51800731) by changing a digit.

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, 19506 + ... + 22001.

It is an arithmetic number, because the mean of its divisors is an integer number (3050838).

Almost surely, 2^51800736 is an apocalyptic number.

It is an amenable number.

51800736 is an abundant number, since it is smaller than the sum of its proper divisors (94639488).

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

51800736 is a wasteful number, since it uses less digits than its factorization.

51800736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41533 (or 41525 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 51800736 is about 7197.2728168383. The cubic root of 51800736 is about 372.7737393009.

The spelling of 51800736 in words is "fifty-one million, eight hundred thousand, seven hundred thirty-six".