54666613 has 2 divisors, whose sum is σ = 54666614. Its totient is φ = 54666612.

The previous prime is 54666589. The next prime is 54666617. The reversal of 54666613 is 31666645.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34082244 + 20584369 = 5838^2 + 4537^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54666613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54666617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27333306 + 27333307.

It is an arithmetic number, because the mean of its divisors is an integer number (27333307).

Almost surely, 2^54666613 is an apocalyptic number.

It is an amenable number.

54666613 is a deficient number, since it is larger than the sum of its proper divisors (1).

54666613 is an equidigital number, since it uses as much as digits as its factorization.

54666613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 37.

The square root of 54666613 is about 7393.6873750518. The cubic root of 54666613 is about 379.5252913433.

The spelling of 54666613 in words is "fifty-four million, six hundred sixty-six thousand, six hundred thirteen".