55615584573161 has 2 divisors, whose sum is σ = 55615584573162. Its totient is φ = 55615584573160.

The previous prime is 55615584573139. The next prime is 55615584573221. The reversal of 55615584573161 is 16137548551655.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35069136486400 + 20546448086761 = 5921920^2 + 4532819^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55615584573161 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 55615584573094 and 55615584573103.

It is not a weakly prime, because it can be changed into another prime (55615584573061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27807792286580 + 27807792286581.

It is an arithmetic number, because the mean of its divisors is an integer number (27807792286581).

Almost surely, 2^{55615584573161} is an apocalyptic number.

It is an amenable number.

55615584573161 is a deficient number, since it is larger than the sum of its proper divisors (1).

55615584573161 is an equidigital number, since it uses as much as digits as its factorization.

55615584573161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600000, while the sum is 62.

The spelling of 55615584573161 in words is "fifty-five trillion, six hundred fifteen billion, five hundred eighty-four million, five hundred seventy-three thousand, one hundred sixty-one".