161227002 has 32 divisors (see below), whose sum is σ = 327539520. Its totient is φ = 52899840.

The previous prime is 161226983. The next prime is 161227009. The reversal of 161227002 is 200722161.

It is a self number, because there is not a number n which added to its sum of digits gives 161227002.

It is not an unprimeable number, because it can be changed into a prime (161227009) 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 15 ways as a sum of consecutive naturals, for example, 209274 + ... + 210042.

It is an arithmetic number, because the mean of its divisors is an integer number (10235610).

Almost surely, 2^161227002 is an apocalyptic number.

161227002 is an abundant number, since it is smaller than the sum of its proper divisors (166312518).

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

161227002 is a wasteful number, since it uses less digits than its factorization.

161227002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 161227002 is about 12697.5195215444. The cubic root of 161227002 is about 544.2677391869.

Adding to 161227002 its reverse (200722161), we get a palindrome (361949163).

The spelling of 161227002 in words is "one hundred sixty-one million, two hundred twenty-seven thousand, two".