54751979 has 2 divisors, whose sum is σ = 54751980. Its totient is φ = 54751978.

The previous prime is 54751969. The next prime is 54751993. The reversal of 54751979 is 97915745.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54751979 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (54751909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27375989 + 27375990.

It is an arithmetic number, because the mean of its divisors is an integer number (27375990).

Almost surely, 2^54751979 is an apocalyptic number.

54751979 is a deficient number, since it is larger than the sum of its proper divisors (1).

54751979 is an equidigital number, since it uses as much as digits as its factorization.

54751979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 396900, while the sum is 47.

The square root of 54751979 is about 7399.4580206931. The cubic root of 54751979 is about 379.7227409663.

The spelling of 54751979 in words is "fifty-four million, seven hundred fifty-one thousand, nine hundred seventy-nine".