54655661 has 2 divisors, whose sum is σ = 54655662. Its totient is φ = 54655660.

The previous prime is 54655639. The next prime is 54655669. The reversal of 54655661 is 16655645.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46158436 + 8497225 = 6794^2 + 2915^2 .

It is a cyclic number.

It is not a de Polignac number, because 54655661 - 2²² = 50461357 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54655669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27327830 + 27327831.

It is an arithmetic number, because the mean of its divisors is an integer number (27327831).

Almost surely, 2^54655661 is an apocalyptic number.

It is an amenable number.

54655661 is a deficient number, since it is larger than the sum of its proper divisors (1).

54655661 is an equidigital number, since it uses as much as digits as its factorization.

54655661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108000, while the sum is 38.

The square root of 54655661 is about 7392.9467061517. The cubic root of 54655661 is about 379.4999447416.

The spelling of 54655661 in words is "fifty-four million, six hundred fifty-five thousand, six hundred sixty-one".