51045437 has 6 divisors (see below), whose sum is σ = 52746174. Its totient is φ = 49397880.

The previous prime is 51045383. The next prime is 51045497. The reversal of 51045437 is 73454015.

51045437 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 only one way, i.e., 50395801 + 649636 = 7099^2 + 806^2 .

It is a de Polignac number, because none of the positive numbers 2^k-51045437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51045497) 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 5 ways as a sum of consecutive naturals, for example, 25598 + ... + 27519.

It is an arithmetic number, because the mean of its divisors is an integer number (8791029).

Almost surely, 2^51045437 is an apocalyptic number.

It is an amenable number.

51045437 is a deficient number, since it is larger than the sum of its proper divisors (1700737).

51045437 is an equidigital number, since it uses as much as digits as its factorization.

51045437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53179 (or 53148 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 51045437 is about 7144.6089466114. The cubic root of 51045437 is about 370.9530749058.

The spelling of 51045437 in words is "fifty-one million, forty-five thousand, four hundred thirty-seven".