165226995 has 24 divisors (see below), whose sum is σ = 303241536. Its totient is φ = 82937088.

The previous prime is 165226991. The next prime is 165227053. The reversal of 165226995 is 599622561.

It is a happy number.

It is not a de Polignac number, because 165226995 - 2² = 165226991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 165226995.

It is not an unprimeable number, because it can be changed into a prime (165226991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107227 + ... + 108756.

It is an arithmetic number, because the mean of its divisors is an integer number (12635064).

Almost surely, 2^165226995 is an apocalyptic number.

165226995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165226995 is a deficient number, since it is larger than the sum of its proper divisors (138014541).

165226995 is a wasteful number, since it uses less digits than its factorization.

165226995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216011 (or 216008 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The square root of 165226995 is about 12854.0653102433. The cubic root of 165226995 is about 548.7320599224.

The spelling of 165226995 in words is "one hundred sixty-five million, two hundred twenty-six thousand, nine hundred ninety-five".