54979 has 2 divisors, whose sum is σ = 54980. Its totient is φ = 54978.

The previous prime is 54973. The next prime is 54983. The reversal of 54979 is 97945.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54979 - 2⁷ = 54851 is a prime.

It is not a weakly prime, because it can be changed into another prime (54973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27489 + 27490.

It is an arithmetic number, because the mean of its divisors is an integer number (27490).

2⁵⁴⁹⁷⁹ is an apocalyptic number.

54979 is a deficient number, since it is larger than the sum of its proper divisors (1).

54979 is an equidigital number, since it uses as much as digits as its factorization.

54979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 34.

The square root of 54979 is about 234.4760115662. The cubic root of 54979 is about 38.0246838702.

Subtracting from 54979 its sum of digits (34), we obtain a palindrome (54945).

The spelling of 54979 in words is "fifty-four thousand, nine hundred seventy-nine".