161237027 has 16 divisors (see below), whose sum is σ = 196618752. Its totient is φ = 129068160.

The previous prime is 161237003. The next prime is 161237033. The reversal of 161237027 is 720732161.

It is a cyclic number.

It is not a de Polignac number, because 161237027 - 2⁸ = 161236771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161237927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10418 + ... + 20760.

It is an arithmetic number, because the mean of its divisors is an integer number (12288672).

Almost surely, 2^161237027 is an apocalyptic number.

161237027 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

161237027 is a deficient number, since it is larger than the sum of its proper divisors (35381725).

161237027 is a wasteful number, since it uses less digits than its factorization.

161237027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10498.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 161237027 is about 12697.9142775497. The cubic root of 161237027 is about 544.2790197023.

Adding to 161237027 its reverse (720732161), we get a palindrome (881969188).

The spelling of 161237027 in words is "one hundred sixty-one million, two hundred thirty-seven thousand, twenty-seven".