145961161 has 8 divisors (see below), whose sum is σ = 149408064. Its totient is φ = 142553040.

The previous prime is 145961159. The next prime is 145961171. The reversal of 145961161 is 161169541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145961161 - 2¹ = 145961159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145961171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2010 + ... + 17203.

It is an arithmetic number, because the mean of its divisors is an integer number (18676008).

Almost surely, 2^145961161 is an apocalyptic number.

It is an amenable number.

145961161 is a deficient number, since it is larger than the sum of its proper divisors (3446903).

145961161 is a wasteful number, since it uses less digits than its factorization.

145961161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19391.

The product of its digits is 6480, while the sum is 34.

The square root of 145961161 is about 12081.4386974400. The cubic root of 145961161 is about 526.5170464177.

The spelling of 145961161 in words is "one hundred forty-five million, nine hundred sixty-one thousand, one hundred sixty-one".