161325653 has 2 divisors, whose sum is σ = 161325654. Its totient is φ = 161325652.

The previous prime is 161325649. The next prime is 161325673. The reversal of 161325653 is 356523161.

161325653 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138839089 + 22486564 = 11783^2 + 4742^2 .

It is a cyclic number.

It is not a de Polignac number, because 161325653 - 2² = 161325649 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161325613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80662826 + 80662827.

It is an arithmetic number, because the mean of its divisors is an integer number (80662827).

Almost surely, 2^161325653 is an apocalyptic number.

It is an amenable number.

161325653 is a deficient number, since it is larger than the sum of its proper divisors (1).

161325653 is an equidigital number, since it uses as much as digits as its factorization.

161325653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16200, while the sum is 32.

The square root of 161325653 is about 12701.4035838564. The cubic root of 161325653 is about 544.3787247512.

The spelling of 161325653 in words is "one hundred sixty-one million, three hundred twenty-five thousand, six hundred fifty-three".