51057248 has 48 divisors (see below), whose sum is σ = 113218560. Its totient is φ = 22454400.

The previous prime is 51057247. The next prime is 51057257. The reversal of 51057248 is 84275015.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51057241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8573 + ... + 13251.

It is an arithmetic number, because the mean of its divisors is an integer number (2358720).

Almost surely, 2^51057248 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 51057248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56609280).

51057248 is an abundant number, since it is smaller than the sum of its proper divisors (62161312).

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

51057248 is a wasteful number, since it uses less digits than its factorization.

51057248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4731 (or 4723 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 51057248 is about 7145.4354660860. The cubic root of 51057248 is about 370.9816833322.

The spelling of 51057248 in words is "fifty-one million, fifty-seven thousand, two hundred forty-eight".