161027537 has 8 divisors (see below), whose sum is σ = 176746080. Its totient is φ = 145488960.

The previous prime is 161027507. The next prime is 161027539. The reversal of 161027537 is 735720161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161027537 - 2⁶ = 161027473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161027539) 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 in 7 ways as a sum of consecutive naturals, for example, 43112 + ... + 46697.

It is an arithmetic number, because the mean of its divisors is an integer number (22093260).

Almost surely, 2^161027537 is an apocalyptic number.

It is an amenable number.

161027537 is a deficient number, since it is larger than the sum of its proper divisors (15718543).

161027537 is a wasteful number, since it uses less digits than its factorization.

161027537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89983.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 161027537 is about 12689.6626038678. The cubic root of 161027537 is about 544.0431962257.

Adding to 161027537 its reverse (735720161), we get a palindrome (896747698).

The spelling of 161027537 in words is "one hundred sixty-one million, twenty-seven thousand, five hundred thirty-seven".