54978727 has 4 divisors (see below), whose sum is σ = 55545616. Its totient is φ = 54411840.

The previous prime is 54978713. The next prime is 54978733. The reversal of 54978727 is 72787945.

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 54978727 - 2²³ = 46590119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54978757) 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, 283299 + ... + 283492.

It is an arithmetic number, because the mean of its divisors is an integer number (13886404).

Almost surely, 2^54978727 is an apocalyptic number.

54978727 is a deficient number, since it is larger than the sum of its proper divisors (566889).

54978727 is an equidigital number, since it uses as much as digits as its factorization.

54978727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566888.

The product of its digits is 987840, while the sum is 49.

The square root of 54978727 is about 7414.7641230183. The cubic root of 54978727 is about 380.2462093245.

The spelling of 54978727 in words is "fifty-four million, nine hundred seventy-eight thousand, seven hundred twenty-seven".