54555162661 has 2 divisors, whose sum is σ = 54555162662. Its totient is φ = 54555162660.

The previous prime is 54555162559. The next prime is 54555162677. The reversal of 54555162661 is 16626155545.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49954932036 + 4600230625 = 223506^2 + 67825^2 .

It is a cyclic number.

It is not a de Polignac number, because 54555162661 - 2⁹ = 54555162149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54555162161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27277581330 + 27277581331.

It is an arithmetic number, because the mean of its divisors is an integer number (27277581331).

Almost surely, 2^54555162661 is an apocalyptic number.

It is an amenable number.

54555162661 is a deficient number, since it is larger than the sum of its proper divisors (1).

54555162661 is an equidigital number, since it uses as much as digits as its factorization.

54555162661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080000, while the sum is 46.

The spelling of 54555162661 in words is "fifty-four billion, five hundred fifty-five million, one hundred sixty-two thousand, six hundred sixty-one".