54666617 has 2 divisors, whose sum is σ = 54666618. Its totient is φ = 54666616.

The previous prime is 54666613. The next prime is 54666641. The reversal of 54666617 is 71666645.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53523856 + 1142761 = 7316^2 + 1069^2 .

It is a cyclic number.

It is not a de Polignac number, because 54666617 - 2² = 54666613 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (54666613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27333308 + 27333309.

It is an arithmetic number, because the mean of its divisors is an integer number (27333309).

Almost surely, 2^54666617 is an apocalyptic number.

It is an amenable number.

54666617 is a deficient number, since it is larger than the sum of its proper divisors (1).

54666617 is an equidigital number, since it uses as much as digits as its factorization.

54666617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 41.

The square root of 54666617 is about 7393.6876455528. The cubic root of 54666617 is about 379.5253006000.

The spelling of 54666617 in words is "fifty-four million, six hundred sixty-six thousand, six hundred seventeen".