54976947 has 4 divisors (see below), whose sum is σ = 73302600. Its totient is φ = 36651296.

The previous prime is 54976913. The next prime is 54976949. The reversal of 54976947 is 74967945.

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-54976947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54976947.

It is not an unprimeable number, because it can be changed into a prime (54976949) 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, 9162822 + ... + 9162827.

It is an arithmetic number, because the mean of its divisors is an integer number (18325650).

Almost surely, 2^54976947 is an apocalyptic number.

54976947 is a deficient number, since it is larger than the sum of its proper divisors (18325653).

54976947 is a wasteful number, since it uses less digits than its factorization.

54976947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18325652.

The product of its digits is 1905120, while the sum is 51.

The square root of 54976947 is about 7414.6440912562. The cubic root of 54976947 is about 380.2421056430.

The spelling of 54976947 in words is "fifty-four million, nine hundred seventy-six thousand, nine hundred forty-seven".