161153226 has 96 divisors (see below), whose sum is σ = 407272320. Its totient is φ = 47386944.

The previous prime is 161153197. The next prime is 161153243. The reversal of 161153226 is 622351161.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 161153226.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 144760 + ... + 145868.

It is an arithmetic number, because the mean of its divisors is an integer number (4242420).

Almost surely, 2^161153226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161153226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203636160).

161153226 is an abundant number, since it is smaller than the sum of its proper divisors (246119094).

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

161153226 is a wasteful number, since it uses less digits than its factorization.

161153226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162 (or 1150 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 161153226 is about 12694.6140547872. The cubic root of 161153226 is about 544.1847092096.

The spelling of 161153226 in words is "one hundred sixty-one million, one hundred fifty-three thousand, two hundred twenty-six".