51878057 has 16 divisors (see below), whose sum is σ = 64972800. Its totient is φ = 40241040.

The previous prime is 51878017. The next prime is 51878059. The reversal of 51878057 is 75087815.

51878057 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 51878057 - 2¹⁴ = 51861673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51878059) 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, 16994 + ... + 19812.

It is an arithmetic number, because the mean of its divisors is an integer number (4060800).

Almost surely, 2^51878057 is an apocalyptic number.

It is an amenable number.

51878057 is a deficient number, since it is larger than the sum of its proper divisors (13094743).

51878057 is a wasteful number, since it uses less digits than its factorization.

51878057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3076.

The product of its (nonzero) digits is 78400, while the sum is 41.

The square root of 51878057 is about 7202.6423623556. The cubic root of 51878057 is about 372.9591221821.

The spelling of 51878057 in words is "fifty-one million, eight hundred seventy-eight thousand, fifty-seven".