51118548 has 48 divisors (see below), whose sum is σ = 129143616. Its totient is φ = 15644160.

The previous prime is 51118499. The next prime is 51118567. The reversal of 51118548 is 84581115.

It is a super-2 number, since 2×51118548² = 5226211899256608, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32140 + ... + 33692.

It is an arithmetic number, because the mean of its divisors is an integer number (2690492).

Almost surely, 2^51118548 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 51118548, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64571808).

51118548 is an abundant number, since it is smaller than the sum of its proper divisors (78025068).

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

51118548 is a wasteful number, since it uses less digits than its factorization.

51118548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784 (or 1782 counting only the distinct ones).

The product of its digits is 6400, while the sum is 33.

The square root of 51118548 is about 7149.7236310224. The cubic root of 51118548 is about 371.1300924418.

The spelling of 51118548 in words is "fifty-one million, one hundred eighteen thousand, five hundred forty-eight".