51575109 has 4 divisors (see below), whose sum is σ = 68766816. Its totient is φ = 34383404.

The previous prime is 51575099. The next prime is 51575113. The reversal of 51575109 is 90157515.

51575109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51575109 - 2¹⁷ = 51444037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51575109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51575149) 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 3 ways as a sum of consecutive naturals, for example, 8595849 + ... + 8595854.

It is an arithmetic number, because the mean of its divisors is an integer number (17191704).

Almost surely, 2^51575109 is an apocalyptic number.

It is an amenable number.

51575109 is a deficient number, since it is larger than the sum of its proper divisors (17191707).

51575109 is a wasteful number, since it uses less digits than its factorization.

51575109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17191706.

The product of its (nonzero) digits is 7875, while the sum is 33.

The square root of 51575109 is about 7181.5812325699. The cubic root of 51575109 is about 372.2317249160.

The spelling of 51575109 in words is "fifty-one million, five hundred seventy-five thousand, one hundred nine".