54979387 has 2 divisors, whose sum is σ = 54979388. Its totient is φ = 54979386.

The previous prime is 54979363. The next prime is 54979403. The reversal of 54979387 is 78397945.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54979387 is a prime.

It is not a weakly prime, because it can be changed into another prime (54979307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27489693 + 27489694.

It is an arithmetic number, because the mean of its divisors is an integer number (27489694).

Almost surely, 2^54979387 is an apocalyptic number.

54979387 is a deficient number, since it is larger than the sum of its proper divisors (1).

54979387 is an equidigital number, since it uses as much as digits as its factorization.

54979387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 52.

The square root of 54979387 is about 7414.8086286835. The cubic root of 54979387 is about 380.2477308918.

It can be divided in two parts, 5497938 and 7, that added together give a palindrome (5497945).

The spelling of 54979387 in words is "fifty-four million, nine hundred seventy-nine thousand, three hundred eighty-seven".