51041250 has 120 divisors (see below), whose sum is σ = 149249100. Its totient is φ = 12528000.

The previous prime is 51041231. The next prime is 51041257. The reversal of 51041250 is 5214015.

51041250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 10 ways, for example, as 6245001 + 44796249 = 2499^2 + 6693^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (51041257) 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 59 ways as a sum of consecutive naturals, for example, 146076 + ... + 146424.

Almost surely, 2^51041250 is an apocalyptic number.

51041250 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 51041250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74624550).

51041250 is an abundant number, since it is smaller than the sum of its proper divisors (98207850).

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

51041250 is a wasteful number, since it uses less digits than its factorization.

51041250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 372 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 51041250 is about 7144.3159224659. The cubic root of 51041250 is about 370.9429321579.

Adding to 51041250 its reverse (5214015), we get a palindrome (56255265).

The spelling of 51041250 in words is "fifty-one million, forty-one thousand, two hundred fifty".