55165451641 has 2 divisors, whose sum is σ = 55165451642. Its totient is φ = 55165451640.

The previous prime is 55165451633. The next prime is 55165451657. The reversal of 55165451641 is 14615456155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48732770025 + 6432681616 = 220755^2 + 80204^2 .

It is a cyclic number.

It is not a de Polignac number, because 55165451641 - 2³ = 55165451633 is a prime.

It is not a weakly prime, because it can be changed into another prime (55165451441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27582725820 + 27582725821.

It is an arithmetic number, because the mean of its divisors is an integer number (27582725821).

Almost surely, 2^55165451641 is an apocalyptic number.

It is an amenable number.

55165451641 is a deficient number, since it is larger than the sum of its proper divisors (1).

55165451641 is an equidigital number, since it uses as much as digits as its factorization.

55165451641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360000, while the sum is 43.

The spelling of 55165451641 in words is "fifty-five billion, one hundred sixty-five million, four hundred fifty-one thousand, six hundred forty-one".