51072450 has 96 divisors (see below), whose sum is σ = 148865472. Its totient is φ = 11424000.

The previous prime is 51072449. The next prime is 51072467. The reversal of 51072450 is 5427015.

It is a self number, because there is not a number n which added to its sum of digits gives 51072450.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20260 + ... + 22640.

It is an arithmetic number, because the mean of its divisors is an integer number (1550682).

Almost surely, 2^51072450 is an apocalyptic number.

51072450 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 51072450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74432736).

51072450 is an abundant number, since it is smaller than the sum of its proper divisors (97793022).

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

51072450 is a wasteful number, since it uses less digits than its factorization.

51072450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2420 (or 2415 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 51072450 is about 7146.4991429371. The cubic root of 51072450 is about 371.0184988947.

Adding to 51072450 its reverse (5427015), we get a palindrome (56499465).

It can be divided in two parts, 5107 and 2450, that added together give a palindrome (7557).

The spelling of 51072450 in words is "fifty-one million, seventy-two thousand, four hundred fifty".