54786947 has 4 divisors (see below), whose sum is σ = 56123256. Its totient is φ = 53450640.

The previous prime is 54786931. The next prime is 54786959. The reversal of 54786947 is 74968745.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74968745 = 5 ⋅14993749.

It is a cyclic number.

It is not a de Polignac number, because 54786947 - 2⁴ = 54786931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54786895 and 54786904.

It is not an unprimeable number, because it can be changed into a prime (54786917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 668093 + ... + 668174.

It is an arithmetic number, because the mean of its divisors is an integer number (14030814).

Almost surely, 2^54786947 is an apocalyptic number.

54786947 is a deficient number, since it is larger than the sum of its proper divisors (1336309).

54786947 is a wasteful number, since it uses less digits than its factorization.

54786947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336308.

The product of its digits is 1693440, while the sum is 50.

The square root of 54786947 is about 7401.8205193047. The cubic root of 54786947 is about 379.8035619052.

The spelling of 54786947 in words is "fifty-four million, seven hundred eighty-six thousand, nine hundred forty-seven".