145595181 has 4 divisors (see below), whose sum is σ = 194126912. Its totient is φ = 97063452.

The previous prime is 145595179. The next prime is 145595207. The reversal of 145595181 is 181595541.

It is a happy number.

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.

It is not a de Polignac number, because 145595181 - 2¹ = 145595179 is a prime.

It is a super-2 number, since 2×145595181² = 42395913460845522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145595161) 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, 24265861 + ... + 24265866.

It is an arithmetic number, because the mean of its divisors is an integer number (48531728).

Almost surely, 2^145595181 is an apocalyptic number.

It is an amenable number.

145595181 is a deficient number, since it is larger than the sum of its proper divisors (48531731).

145595181 is an equidigital number, since it uses as much as digits as its factorization.

145595181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48531730.

The product of its digits is 36000, while the sum is 39.

The square root of 145595181 is about 12066.2828161783. The cubic root of 145595181 is about 526.0766187839.

The spelling of 145595181 in words is "one hundred forty-five million, five hundred ninety-five thousand, one hundred eighty-one".