54439961 has 2 divisors, whose sum is σ = 54439962. Its totient is φ = 54439960.

The previous prime is 54439943. The next prime is 54439963. The reversal of 54439961 is 16993445.

54439961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35473936 + 18966025 = 5956^2 + 4355^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54439961 is a prime.

It is a Sophie Germain prime.

Together with 54439963, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (54439963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27219980 + 27219981.

It is an arithmetic number, because the mean of its divisors is an integer number (27219981).

Almost surely, 2^54439961 is an apocalyptic number.

It is an amenable number.

54439961 is a deficient number, since it is larger than the sum of its proper divisors (1).

54439961 is an equidigital number, since it uses as much as digits as its factorization.

54439961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 41.

The square root of 54439961 is about 7378.3440554097. The cubic root of 54439961 is about 379.0000510532. Note that the first 4 decimals are identical.

The spelling of 54439961 in words is "fifty-four million, four hundred thirty-nine thousand, nine hundred sixty-one".