51580650 has 96 divisors (see below), whose sum is σ = 142990848. Its totient is φ = 12196800.

The previous prime is 51580619. The next prime is 51580657. The reversal of 51580650 is 5608515.

It is a happy number.

51580650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51580657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70587 + ... + 71313.

It is an arithmetic number, because the mean of its divisors is an integer number (1489488).

Almost surely, 2^51580650 is an apocalyptic number.

51580650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 51580650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71495424).

51580650 is an abundant number, since it is smaller than the sum of its proper divisors (91410198).

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

51580650 is a wasteful number, since it uses less digits than its factorization.

51580650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796 (or 791 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 51580650 is about 7181.9670007596. The cubic root of 51580650 is about 372.2450547449.

The spelling of 51580650 in words is "fifty-one million, five hundred eighty thousand, six hundred fifty".