54878471 has 4 divisors (see below), whose sum is σ = 54894192. Its totient is φ = 54862752.

The previous prime is 54878443. The next prime is 54878477. The reversal of 54878471 is 17487845.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 54878471 - 2¹⁰ = 54877447 is a prime.

It is a super-3 number, since 3×54878471³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54878477) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11 + ... + 10476.

It is an arithmetic number, because the mean of its divisors is an integer number (13723548).

Almost surely, 2^54878471 is an apocalyptic number.

54878471 is a deficient number, since it is larger than the sum of its proper divisors (15721).

54878471 is a wasteful number, since it uses less digits than its factorization.

54878471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15720.

The product of its digits is 250880, while the sum is 44.

The square root of 54878471 is about 7408.0004724622. Note that the first 3 decimals coincide. The cubic root of 54878471 is about 380.0149370860.

The spelling of 54878471 in words is "fifty-four million, eight hundred seventy-eight thousand, four hundred seventy-one".