55668511 has 2 divisors, whose sum is σ = 55668512. Its totient is φ = 55668510.

The previous prime is 55668479. The next prime is 55668517. The reversal of 55668511 is 11586655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55668511 - 2⁵ = 55668479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55668517) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27834255 + 27834256.

It is an arithmetic number, because the mean of its divisors is an integer number (27834256).

Almost surely, 2^55668511 is an apocalyptic number.

55668511 is a deficient number, since it is larger than the sum of its proper divisors (1).

55668511 is an equidigital number, since it uses as much as digits as its factorization.

55668511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36000, while the sum is 37.

The square root of 55668511 is about 7461.1333589476. The cubic root of 55668511 is about 381.8298425302.

The spelling of 55668511 in words is "fifty-five million, six hundred sixty-eight thousand, five hundred eleven".