54188947 has 4 divisors (see below), whose sum is σ = 54207000. Its totient is φ = 54170896.

The previous prime is 54188941. The next prime is 54188971. The reversal of 54188947 is 74988145.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54188947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54188897 and 54188906.

It is not an unprimeable number, because it can be changed into a prime (54188941) 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, 3322 + ... + 10927.

It is an arithmetic number, because the mean of its divisors is an integer number (13551750).

Almost surely, 2^54188947 is an apocalyptic number.

54188947 is a deficient number, since it is larger than the sum of its proper divisors (18053).

54188947 is a wasteful number, since it uses less digits than its factorization.

54188947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18052.

The product of its digits is 322560, while the sum is 46.

The square root of 54188947 is about 7361.3142169045. The cubic root of 54188947 is about 378.4166504949.

It can be divided in two parts, 5418 and 8947, that added together give a triangular number (14365 = T₁₆₉).

The spelling of 54188947 in words is "fifty-four million, one hundred eighty-eight thousand, nine hundred forty-seven".