161375527 has 2 divisors, whose sum is σ = 161375528. Its totient is φ = 161375526.

The previous prime is 161375519. The next prime is 161375563. The reversal of 161375527 is 725573161.

It is a weak prime.

It is an emirp because it is prime and its reverse (725573161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161375527 - 2³ = 161375519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161375827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80687763 + 80687764.

It is an arithmetic number, because the mean of its divisors is an integer number (80687764).

Almost surely, 2^161375527 is an apocalyptic number.

161375527 is a deficient number, since it is larger than the sum of its proper divisors (1).

161375527 is an equidigital number, since it uses as much as digits as its factorization.

161375527 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44100, while the sum is 37.

The square root of 161375527 is about 12703.3667584621. The cubic root of 161375527 is about 544.4348173950.

The spelling of 161375527 in words is "one hundred sixty-one million, three hundred seventy-five thousand, five hundred twenty-seven".