51535445 has 16 divisors (see below), whose sum is σ = 67518192. Its totient is φ = 37532160.

The previous prime is 51535441. The next prime is 51535493. The reversal of 51535445 is 54453515.

51535445 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 8 ways, for example, as 4104676 + 47430769 = 2026^2 + 6887^2 .

It is not a de Polignac number, because 51535445 - 2² = 51535441 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 (51535441) 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 15 ways as a sum of consecutive naturals, for example, 686 + ... + 10175.

It is an arithmetic number, because the mean of its divisors is an integer number (4219887).

Almost surely, 2^51535445 is an apocalyptic number.

It is an amenable number.

51535445 is a deficient number, since it is larger than the sum of its proper divisors (15982747).

51535445 is a wasteful number, since it uses less digits than its factorization.

51535445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10952.

The product of its digits is 30000, while the sum is 32.

The square root of 51535445 is about 7178.8191925971. The cubic root of 51535445 is about 372.1362784506.

The spelling of 51535445 in words is "fifty-one million, five hundred thirty-five thousand, four hundred forty-five".