161226301 has 4 divisors (see below), whose sum is σ = 161821504. Its totient is φ = 160631100.

The previous prime is 161226277. The next prime is 161226311. The reversal of 161226301 is 103622161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 103622161 = 397 ⋅261013.

It is a cyclic number.

It is not a de Polignac number, because 161226301 - 2⁹ = 161225789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161226311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297195 + ... + 297736.

It is an arithmetic number, because the mean of its divisors is an integer number (40455376).

Almost surely, 2^161226301 is an apocalyptic number.

It is an amenable number.

161226301 is a deficient number, since it is larger than the sum of its proper divisors (595203).

161226301 is an equidigital number, since it uses as much as digits as its factorization.

161226301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595202.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 161226301 is about 12697.4919176978. The cubic root of 161226301 is about 544.2669503773.

Adding to 161226301 its reverse (103622161), we get a palindrome (264848462).

The spelling of 161226301 in words is "one hundred sixty-one million, two hundred twenty-six thousand, three hundred one".