165537226 has 4 divisors (see below), whose sum is σ = 248305842. Its totient is φ = 82768612.

The previous prime is 165537221. The next prime is 165537269. The reversal of 165537226 is 622735561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 163712025 + 1825201 = 12795^2 + 1351^2 .

It is not an unprimeable number, because it can be changed into a prime (165537221) 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, 41384305 + ... + 41384308.

Almost surely, 2^165537226 is an apocalyptic number.

165537226 is a deficient number, since it is larger than the sum of its proper divisors (82768616).

165537226 is an equidigital number, since it uses as much as digits as its factorization.

165537226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82768615.

The product of its digits is 75600, while the sum is 37.

The square root of 165537226 is about 12866.1270784957. The cubic root of 165537226 is about 549.0752791863.

The spelling of 165537226 in words is "one hundred sixty-five million, five hundred thirty-seven thousand, two hundred twenty-six".