165427722 has 24 divisors (see below), whose sum is σ = 360632064. Its totient is φ = 54803304.

The previous prime is 165427693. The next prime is 165427723. The reversal of 165427722 is 227724561.

It is a happy number.

165427722 is a `hidden beast` number, since 165 + 427 + 72 + 2 = 666.

It is a super-2 number, since 2×165427722² = 54732662412218568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (165427723) 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 11 ways as a sum of consecutive naturals, for example, 25258 + ... + 31125.

It is an arithmetic number, because the mean of its divisors is an integer number (15026336).

Almost surely, 2^165427722 is an apocalyptic number.

165427722 is an abundant number, since it is smaller than the sum of its proper divisors (195204342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165427722 is a wasteful number, since it uses less digits than its factorization.

165427722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56554 (or 56551 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 165427722 is about 12861.8708592491. The cubic root of 165427722 is about 548.9541801369.

The spelling of 165427722 in words is "one hundred sixty-five million, four hundred twenty-seven thousand, seven hundred twenty-two".