161807053 has 2 divisors, whose sum is σ = 161807054. Its totient is φ = 161807052.

The previous prime is 161807029. The next prime is 161807069. The reversal of 161807053 is 350708161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160731684 + 1075369 = 12678^2 + 1037^2 .

It is an emirp because it is prime and its reverse (350708161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161807053 - 2¹⁷ = 161675981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161804053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80903526 + 80903527.

It is an arithmetic number, because the mean of its divisors is an integer number (80903527).

Almost surely, 2^161807053 is an apocalyptic number.

It is an amenable number.

161807053 is a deficient number, since it is larger than the sum of its proper divisors (1).

161807053 is an equidigital number, since it uses as much as digits as its factorization.

161807053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 161807053 is about 12720.3401291003. The cubic root of 161807053 is about 544.9196671989.

The spelling of 161807053 in words is "one hundred sixty-one million, eight hundred seven thousand, fifty-three".