51575121 has 48 divisors (see below), whose sum is σ = 83655936. Its totient is φ = 30417408.

The previous prime is 51575113. The next prime is 51575123. The reversal of 51575121 is 12157515.

51575121 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 51575121 - 2³ = 51575113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51575123) 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 47 ways as a sum of consecutive naturals, for example, 456361 + ... + 456473.

It is an arithmetic number, because the mean of its divisors is an integer number (1742832).

Almost surely, 2^51575121 is an apocalyptic number.

It is an amenable number.

51575121 is a deficient number, since it is larger than the sum of its proper divisors (32080815).

51575121 is a wasteful number, since it uses less digits than its factorization.

51575121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262 (or 259 counting only the distinct ones).

The product of its digits is 1750, while the sum is 27.

The square root of 51575121 is about 7181.5820680404. The cubic root of 51575121 is about 372.2317537851.

The spelling of 51575121 in words is "fifty-one million, five hundred seventy-five thousand, one hundred twenty-one".