51449337 has 20 divisors (see below), whose sum is σ = 77093940. Its totient is φ = 34193664.

The previous prime is 51449329. The next prime is 51449339. The reversal of 51449337 is 73394415.

51449337 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 2 ways, for example, as 26409321 + 25040016 = 5139^2 + 5004^2 .

It is not a de Polignac number, because 51449337 - 2³ = 51449329 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51449339) 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 19 ways as a sum of consecutive naturals, for example, 32353 + ... + 33905.

It is an arithmetic number, because the mean of its divisors is an integer number (3854697).

Almost surely, 2^51449337 is an apocalyptic number.

It is an amenable number.

51449337 is a deficient number, since it is larger than the sum of its proper divisors (25644603).

51449337 is a wasteful number, since it uses less digits than its factorization.

51449337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1974 (or 1965 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 51449337 is about 7172.8193201837. The cubic root of 51449337 is about 371.9289016047.

The spelling of 51449337 in words is "fifty-one million, four hundred forty-nine thousand, three hundred thirty-seven".