51472945 has 8 divisors (see below), whose sum is σ = 61871040. Its totient is φ = 41109360.

The previous prime is 51472909. The next prime is 51473027. The reversal of 51472945 is 54927415.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51472945 - 2⁹ = 51472433 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5221 + ... + 11410.

It is an arithmetic number, because the mean of its divisors is an integer number (7733880).

Almost surely, 2^51472945 is an apocalyptic number.

It is an amenable number.

51472945 is a deficient number, since it is larger than the sum of its proper divisors (10398095).

51472945 is a wasteful number, since it uses less digits than its factorization.

51472945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17255.

The product of its digits is 50400, while the sum is 37.

The square root of 51472945 is about 7174.4647884006. The cubic root of 51472945 is about 371.9857805680.

The spelling of 51472945 in words is "fifty-one million, four hundred seventy-two thousand, nine hundred forty-five".