161222053 has 2 divisors, whose sum is σ = 161222054. Its totient is φ = 161222052.

The previous prime is 161222029. The next prime is 161222057. The reversal of 161222053 is 350222161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94342369 + 66879684 = 9713^2 + 8178^2 .

It is a cyclic number.

It is not a de Polignac number, because 161222053 - 2¹³ = 161213861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161222057) 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, 80611026 + 80611027.

It is an arithmetic number, because the mean of its divisors is an integer number (80611027).

Almost surely, 2^161222053 is an apocalyptic number.

It is an amenable number.

161222053 is a deficient number, since it is larger than the sum of its proper divisors (1).

161222053 is an equidigital number, since it uses as much as digits as its factorization.

161222053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 161222053 is about 12697.3246394664. The cubic root of 161222053 is about 544.2621702095.

The spelling of 161222053 in words is "one hundred sixty-one million, two hundred twenty-two thousand, fifty-three".