55252477472161 has 2 divisors, whose sum is σ = 55252477472162. Its totient is φ = 55252477472160.

The previous prime is 55252477472117. The next prime is 55252477472197. The reversal of 55252477472161 is 16127477425255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53733591302400 + 1518886169761 = 7330320^2 + 1232431^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55252477472161 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55252477472096 and 55252477472105.

It is not a weakly prime, because it can be changed into another prime (55252477472111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27626238736080 + 27626238736081.

It is an arithmetic number, because the mean of its divisors is an integer number (27626238736081).

Almost surely, 2^{55252477472161} is an apocalyptic number.

It is an amenable number.

55252477472161 is a deficient number, since it is larger than the sum of its proper divisors (1).

55252477472161 is an equidigital number, since it uses as much as digits as its factorization.

55252477472161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32928000, while the sum is 58.

The spelling of 55252477472161 in words is "fifty-five trillion, two hundred fifty-two billion, four hundred seventy-seven million, four hundred seventy-two thousand, one hundred sixty-one".