51375807 has 24 divisors (see below), whose sum is σ = 85348224. Its totient is φ = 29171664.

The previous prime is 51375803. The next prime is 51375809. The reversal of 51375807 is 70857315.

It is not a de Polignac number, because 51375807 - 2² = 51375803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51375803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7768 + ... + 12770.

It is an arithmetic number, because the mean of its divisors is an integer number (3556176).

Almost surely, 2^51375807 is an apocalyptic number.

51375807 is a deficient number, since it is larger than the sum of its proper divisors (33972417).

51375807 is a wasteful number, since it uses less digits than its factorization.

51375807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5179 (or 5176 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The square root of 51375807 is about 7167.6918879092. The cubic root of 51375807 is about 371.7516335556.

The spelling of 51375807 in words is "fifty-one million, three hundred seventy-five thousand, eight hundred seven".