51575472 has 60 divisors (see below), whose sum is σ = 155448384. Its totient is φ = 15868800.

The previous prime is 51575471. The next prime is 51575473. The reversal of 51575472 is 27457515.

51575472 is a `hidden beast` number, since 515 + 75 + 4 + 72 = 666.

51575472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51575471) and next prime (51575473).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (51575471) 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 11 ways as a sum of consecutive naturals, for example, 11904 + ... + 15647.

Almost surely, 2^51575472 is an apocalyptic number.

51575472 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51575472 is an abundant number, since it is smaller than the sum of its proper divisors (103872912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51575472 is a wasteful number, since it uses less digits than its factorization.

51575472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27578 (or 27569 counting only the distinct ones).

The product of its digits is 49000, while the sum is 36.

The square root of 51575472 is about 7181.6065055111. The cubic root of 51575472 is about 372.2325982042.

The spelling of 51575472 in words is "fifty-one million, five hundred seventy-five thousand, four hundred seventy-two".