51159732 has 96 divisors (see below), whose sum is σ = 138184704. Its totient is φ = 14592000.

The previous prime is 51159709. The next prime is 51159737. The reversal of 51159732 is 23795115.

It is a junction number, because it is equal to n+sod(n) for n = 51159693 and 51159702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51159737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 267757 + ... + 267947.

It is an arithmetic number, because the mean of its divisors is an integer number (1439424).

Almost surely, 2^51159732 is an apocalyptic number.

51159732 is a gapful number since it is divisible by the number (52) 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 51159732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69092352).

51159732 is an abundant number, since it is smaller than the sum of its proper divisors (87024972).

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

51159732 is a wasteful number, since it uses less digits than its factorization.

51159732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329 (or 327 counting only the distinct ones).

The product of its digits is 9450, while the sum is 33.

The square root of 51159732 is about 7152.6031624857. The cubic root of 51159732 is about 371.2297335013.

The spelling of 51159732 in words is "fifty-one million, one hundred fifty-nine thousand, seven hundred thirty-two".