1615055161 has 2 divisors, whose sum is σ = 1615055162. Its totient is φ = 1615055160.

The previous prime is 1615055159. The next prime is 1615055173. The reversal of 1615055161 is 1615505161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1580539536 + 34515625 = 39756^2 + 5875^2 .

It is an emirp because it is prime and its reverse (1615505161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1615055161 - 2¹ = 1615055159 is a prime.

Together with 1615055159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1615055191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 807527580 + 807527581.

It is an arithmetic number, because the mean of its divisors is an integer number (807527581).

Almost surely, 2^1615055161 is an apocalyptic number.

It is an amenable number.

1615055161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1615055161 is an equidigital number, since it uses as much as digits as its factorization.

1615055161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 31.

The square root of 1615055161 is about 40187.7488919198. The cubic root of 1615055161 is about 1173.2641121049.

The spelling of 1615055161 in words is "one billion, six hundred fifteen million, fifty-five thousand, one hundred sixty-one".