54916661 has 2 divisors, whose sum is σ = 54916662. Its totient is φ = 54916660.

The previous prime is 54916651. The next prime is 54916711. The reversal of 54916661 is 16661945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43151761 + 11764900 = 6569^2 + 3430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54916661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54916651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27458330 + 27458331.

It is an arithmetic number, because the mean of its divisors is an integer number (27458331).

Almost surely, 2^54916661 is an apocalyptic number.

It is an amenable number.

54916661 is a deficient number, since it is larger than the sum of its proper divisors (1).

54916661 is an equidigital number, since it uses as much as digits as its factorization.

54916661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 38.

The square root of 54916661 is about 7410.5776428022. The cubic root of 54916661 is about 380.1030676103.

The spelling of 54916661 in words is "fifty-four million, nine hundred sixteen thousand, six hundred sixty-one".