161534053 has 2 divisors, whose sum is σ = 161534054. Its totient is φ = 161534052.

The previous prime is 161533961. The next prime is 161534077. The reversal of 161534053 is 350435161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161239204 + 294849 = 12698^2 + 543^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161534053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161531053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80767026 + 80767027.

It is an arithmetic number, because the mean of its divisors is an integer number (80767027).

Almost surely, 2^161534053 is an apocalyptic number.

It is an amenable number.

161534053 is a deficient number, since it is larger than the sum of its proper divisors (1).

161534053 is an equidigital number, since it uses as much as digits as its factorization.

161534053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 161534053 is about 12709.6047538859. The cubic root of 161534053 is about 544.6130328280.

The spelling of 161534053 in words is "one hundred sixty-one million, five hundred thirty-four thousand, fifty-three".