51270450 has 192 divisors, whose sum is σ = 166275072. Its totient is φ = 10137600.

The previous prime is 51270437. The next prime is 51270481. The reversal of 51270450 is 5407215.

It is a self number, because there is not a number n which added to its sum of digits gives 51270450.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 265554 + ... + 265746.

It is an arithmetic number, because the mean of its divisors is an integer number (866016).

Almost surely, 2^51270450 is an apocalyptic number.

51270450 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 51270450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83137536).

51270450 is an abundant number, since it is smaller than the sum of its proper divisors (115004622).

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

51270450 is a wasteful number, since it uses less digits than its factorization.

51270450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249 (or 244 counting only the distinct ones).

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

The square root of 51270450 is about 7160.3386791408. The cubic root of 51270450 is about 371.4973410986.

Adding to 51270450 its reverse (5407215), we get a palindrome (56677665).

The spelling of 51270450 in words is "fifty-one million, two hundred seventy thousand, four hundred fifty".