51253248 has 104 divisors (see below), whose sum is σ = 141278368. Its totient is φ = 16515072.

The previous prime is 51253219. The next prime is 51253271. The reversal of 51253248 is 84235215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 528336 + ... + 528432.

Almost surely, 2^51253248 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 51253248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70639184).

51253248 is an abundant number, since it is smaller than the sum of its proper divisors (90025120).

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

51253248 is an equidigital number, since it uses as much as digits as its factorization.

51253248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 145 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 51253248 is about 7159.1373782042. The cubic root of 51253248 is about 371.4557888198.

The spelling of 51253248 in words is "fifty-one million, two hundred fifty-three thousand, two hundred forty-eight".