145166641 has 4 divisors (see below), whose sum is σ = 147546484. Its totient is φ = 142786800.

The previous prime is 145166627. The next prime is 145166647. The reversal of 145166641 is 146661541.

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 20286016 + 124880625 = 4504^2 + 11175^2 .

It is a cyclic number.

It is not a de Polignac number, because 145166641 - 2⁷ = 145166513 is a prime.

It is a super-3 number, since 3×145166641³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145166597 and 145166606.

It is not an unprimeable number, because it can be changed into a prime (145166647) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1189830 + ... + 1189951.

It is an arithmetic number, because the mean of its divisors is an integer number (36886621).

Almost surely, 2^145166641 is an apocalyptic number.

It is an amenable number.

145166641 is a deficient number, since it is larger than the sum of its proper divisors (2379843).

145166641 is an equidigital number, since it uses as much as digits as its factorization.

145166641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2379842.

The product of its digits is 17280, while the sum is 34.

The square root of 145166641 is about 12048.5119828135. The cubic root of 145166641 is about 525.5599660943.

The spelling of 145166641 in words is "one hundred forty-five million, one hundred sixty-six thousand, six hundred forty-one".