51254784 has 180 divisors, whose sum is σ = 172833804. Its totient is φ = 14579712.

The previous prime is 51254771. The next prime is 51254821. The reversal of 51254784 is 48745215.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 225679 + ... + 225905.

Almost surely, 2^51254784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51254784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86416902).

51254784 is an abundant number, since it is smaller than the sum of its proper divisors (121579020).

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

51254784 is a wasteful number, since it uses less digits than its factorization.

51254784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 239 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 51254784 is about 7159.2446528946. The cubic root of 51254784 is about 371.4594994815.

Adding to 51254784 its reverse (48745215), we get a palindrome (99999999).

The spelling of 51254784 in words is "fifty-one million, two hundred fifty-four thousand, seven hundred eighty-four".