51349845 has 16 divisors (see below), whose sum is σ = 83711232. Its totient is φ = 26869440.

The previous prime is 51349829. The next prime is 51349847. The reversal of 51349845 is 54894315.

51349845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51349845 - 2⁴ = 51349829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51349847) 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, 31501 + ... + 33090.

It is an arithmetic number, because the mean of its divisors is an integer number (5231952).

Almost surely, 2^51349845 is an apocalyptic number.

It is an amenable number.

51349845 is a deficient number, since it is larger than the sum of its proper divisors (32361387).

51349845 is a wasteful number, since it uses less digits than its factorization.

51349845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64652.

The product of its digits is 86400, while the sum is 39.

The square root of 51349845 is about 7165.8806158071. The cubic root of 51349845 is about 371.6890032849.

The spelling of 51349845 in words is "fifty-one million, three hundred forty-nine thousand, eight hundred forty-five".