51878422 has 16 divisors (see below), whose sum is σ = 79702272. Its totient is φ = 25318440.

The previous prime is 51878381. The next prime is 51878429. The reversal of 51878422 is 22487815.

51878422 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 not an unprimeable number, because it can be changed into a prime (51878429) 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 7 ways as a sum of consecutive naturals, for example, 12853 + ... + 16399.

It is an arithmetic number, because the mean of its divisors is an integer number (4981392).

Almost surely, 2^51878422 is an apocalyptic number.

51878422 is a deficient number, since it is larger than the sum of its proper divisors (27823850).

51878422 is a wasteful number, since it uses less digits than its factorization.

51878422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3723.

The product of its digits is 35840, while the sum is 37.

The square root of 51878422 is about 7202.6677002344. The cubic root of 51878422 is about 372.9599968599.

The spelling of 51878422 in words is "fifty-one million, eight hundred seventy-eight thousand, four hundred twenty-two".