161707453 has 2 divisors, whose sum is σ = 161707454. Its totient is φ = 161707452.

The previous prime is 161707433. The next prime is 161707463. The reversal of 161707453 is 354707161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152695449 + 9012004 = 12357^2 + 3002^2 .

It is a cyclic number.

It is not a de Polignac number, because 161707453 - 2⁵ = 161707421 is a prime.

It is a super-4 number, since 4×161707453⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is equal to p_9064816 and since 161707453 and 9064816 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161707433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80853726 + 80853727.

It is an arithmetic number, because the mean of its divisors is an integer number (80853727).

Almost surely, 2^161707453 is an apocalyptic number.

It is an amenable number.

161707453 is a deficient number, since it is larger than the sum of its proper divisors (1).

161707453 is an equidigital number, since it uses as much as digits as its factorization.

161707453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 161707453 is about 12716.4245367949. The cubic root of 161707453 is about 544.8078361884.

The spelling of 161707453 in words is "one hundred sixty-one million, seven hundred seven thousand, four hundred fifty-three".