51482500 has 30 divisors (see below), whose sum is σ = 112587398. Its totient is φ = 20592000.

The previous prime is 51482471. The next prime is 51482507. The reversal of 51482500 is 528415.

It can be written as a sum of positive squares in 5 ways, for example, as 6646084 + 44836416 = 2578^2 + 6696^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (51482507) 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 9 ways as a sum of consecutive naturals, for example, 7797 + ... + 12796.

Almost surely, 2^51482500 is an apocalyptic number.

51482500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51482500 is an abundant number, since it is smaller than the sum of its proper divisors (61104898).

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

51482500 is a wasteful number, since it uses less digits than its factorization.

51482500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20617 (or 20600 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 51482500 is about 7175.1306608312. The cubic root of 51482500 is about 372.0087965700.

The spelling of 51482500 in words is "fifty-one million, four hundred eighty-two thousand, five hundred".