51575878 has 16 divisors (see below), whose sum is σ = 80188416. Its totient is φ = 24853320.

The previous prime is 51575869. The next prime is 51575897. The reversal of 51575878 is 87857515.

It is a happy number.

51575878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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, 14725 + ... + 17887.

It is an arithmetic number, because the mean of its divisors is an integer number (5011776).

Almost surely, 2^51575878 is an apocalyptic number.

51575878 is a deficient number, since it is larger than the sum of its proper divisors (28612538).

51575878 is a wasteful number, since it uses less digits than its factorization.

51575878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3459.

The product of its digits is 392000, while the sum is 46.

The square root of 51575878 is about 7181.6347721114. The cubic root of 51575878 is about 372.2335749349.

The spelling of 51575878 in words is "fifty-one million, five hundred seventy-five thousand, eight hundred seventy-eight".