51475787 has 16 divisors (see below), whose sum is σ = 57867264. Its totient is φ = 45384000.

The previous prime is 51475777. The next prime is 51475799. The reversal of 51475787 is 78757415.

51475787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51475787 - 2¹⁰ = 51474763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51475777) 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, 140078 + ... + 140444.

It is an arithmetic number, because the mean of its divisors is an integer number (3616704).

Almost surely, 2^51475787 is an apocalyptic number.

51475787 is a deficient number, since it is larger than the sum of its proper divisors (6391477).

51475787 is a wasteful number, since it uses less digits than its factorization.

51475787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730.

The product of its digits is 274400, while the sum is 44.

The square root of 51475787 is about 7174.6628492216. The cubic root of 51475787 is about 371.9926266508.

The spelling of 51475787 in words is "fifty-one million, four hundred seventy-five thousand, seven hundred eighty-seven".