51452250 has 64 divisors (see below), whose sum is σ = 132627456. Its totient is φ = 13272000.

The previous prime is 51452231. The next prime is 51452267. The reversal of 51452250 is 5225415.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 51452250.

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 31 ways as a sum of consecutive naturals, for example, 22144 + ... + 24356.

It is an arithmetic number, because the mean of its divisors is an integer number (2072304).

Almost surely, 2^51452250 is an apocalyptic number.

51452250 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 51452250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66313728).

51452250 is an abundant number, since it is smaller than the sum of its proper divisors (81175206).

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

51452250 is a wasteful number, since it uses less digits than its factorization.

51452250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2264 (or 2254 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 51452250 is about 7173.0223755402. The cubic root of 51452250 is about 371.9359208623.

Adding to 51452250 its reverse (5225415), we get a palindrome (56677665).

The spelling of 51452250 in words is "fifty-one million, four hundred fifty-two thousand, two hundred fifty".