51326740 has 24 divisors (see below), whose sum is σ = 114127272. Its totient is φ = 19322880.

The previous prime is 51326729. The next prime is 51326741. The reversal of 51326740 is 4762315.

51326740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 18905104 + 32421636 = 4348^2 + 5694^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51326699 and 51326708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51326741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75141 + ... + 75820.

It is an arithmetic number, because the mean of its divisors is an integer number (4755303).

Almost surely, 2^51326740 is an apocalyptic number.

It is an amenable number.

51326740 is an abundant number, since it is smaller than the sum of its proper divisors (62800532).

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

51326740 is a wasteful number, since it uses less digits than its factorization.

51326740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150987 (or 150985 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 51326740 is about 7164.2682808505. The cubic root of 51326740 is about 371.6332474347.

The spelling of 51326740 in words is "fifty-one million, three hundred twenty-six thousand, seven hundred forty".