161353589 has 2 divisors, whose sum is σ = 161353590. Its totient is φ = 161353588.

The previous prime is 161353499. The next prime is 161353603. The reversal of 161353589 is 985353161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154504900 + 6848689 = 12430^2 + 2617^2 .

It is a cyclic number.

It is not a de Polignac number, because 161353589 - 2¹² = 161349493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161356589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80676794 + 80676795.

It is an arithmetic number, because the mean of its divisors is an integer number (80676795).

Almost surely, 2^161353589 is an apocalyptic number.

It is an amenable number.

161353589 is a deficient number, since it is larger than the sum of its proper divisors (1).

161353589 is an equidigital number, since it uses as much as digits as its factorization.

161353589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 41.

The square root of 161353589 is about 12702.5032572324. The cubic root of 161353589 is about 544.4101454336.

The spelling of 161353589 in words is "one hundred sixty-one million, three hundred fifty-three thousand, five hundred eighty-nine".