51549471 has 6 divisors (see below), whose sum is σ = 74460360. Its totient is φ = 34366308.

The previous prime is 51549439. The next prime is 51549493. The reversal of 51549471 is 17494515.

51549471 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 51549471 - 2⁵ = 51549439 is a prime.

It is a super-3 number, since 3×51549471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51549431) 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 5 ways as a sum of consecutive naturals, for example, 2863851 + ... + 2863868.

It is an arithmetic number, because the mean of its divisors is an integer number (12410060).

Almost surely, 2^51549471 is an apocalyptic number.

51549471 is a deficient number, since it is larger than the sum of its proper divisors (22910889).

51549471 is a wasteful number, since it uses less digits than its factorization.

51549471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5727725 (or 5727722 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 51549471 is about 7179.7960277434. The cubic root of 51549471 is about 372.1700358642.

The spelling of 51549471 in words is "fifty-one million, five hundred forty-nine thousand, four hundred seventy-one".