51575447 has 32 divisors (see below), whose sum is σ = 67736064. Its totient is φ = 38102400.

The previous prime is 51575441. The next prime is 51575471. The reversal of 51575447 is 74457515.

It is not a de Polignac number, because 51575447 - 2¹⁰ = 51574423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51575447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51575441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122297 + ... + 122717.

It is an arithmetic number, because the mean of its divisors is an integer number (2116752).

Almost surely, 2^51575447 is an apocalyptic number.

51575447 is a deficient number, since it is larger than the sum of its proper divisors (16160617).

51575447 is a wasteful number, since it uses less digits than its factorization.

51575447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519.

The product of its digits is 98000, while the sum is 38.

The square root of 51575447 is about 7181.6047649533. The cubic root of 51575447 is about 372.2325380605.

The spelling of 51575447 in words is "fifty-one million, five hundred seventy-five thousand, four hundred forty-seven".