146232161 has 4 divisors (see below), whose sum is σ = 146256900. Its totient is φ = 146207424.

The previous prime is 146232133. The next prime is 146232173. The reversal of 146232161 is 161232641.

146232161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15358561 + 130873600 = 3919^2 + 11440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146232161 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 146232161.

It is not an unprimeable number, because it can be changed into a prime (146232061) 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, 2285 + ... + 17253.

It is an arithmetic number, because the mean of its divisors is an integer number (36564225).

Almost surely, 2^146232161 is an apocalyptic number.

It is an amenable number.

146232161 is a deficient number, since it is larger than the sum of its proper divisors (24739).

146232161 is an equidigital number, since it uses as much as digits as its factorization.

146232161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24738.

The product of its digits is 1728, while the sum is 26.

The square root of 146232161 is about 12092.6490480788. The cubic root of 146232161 is about 526.8426990391.

The spelling of 146232161 in words is "one hundred forty-six million, two hundred thirty-two thousand, one hundred sixty-one".