51913248 has 72 divisors (see below), whose sum is σ = 141352848. Its totient is φ = 16681728.

The previous prime is 51913207. The next prime is 51913249. The reversal of 51913248 is 84231915.

It is not an unprimeable number, because it can be changed into a prime (51913249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80415 + ... + 81057.

It is an arithmetic number, because the mean of its divisors is an integer number (1963234).

Almost surely, 2^51913248 is an apocalyptic number.

51913248 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51913248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70676424).

51913248 is an abundant number, since it is smaller than the sum of its proper divisors (89439600).

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

51913248 is a wasteful number, since it uses less digits than its factorization.

51913248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714 (or 677 counting only the distinct ones).

The product of its digits is 8640, while the sum is 33.

The square root of 51913248 is about 7205.0848711171. The cubic root of 51913248 is about 373.0434342442.

The spelling of 51913248 in words is "fifty-one million, nine hundred thirteen thousand, two hundred forty-eight".