145984045 has 4 divisors (see below), whose sum is σ = 175180860. Its totient is φ = 116787232.

The previous prime is 145984043. The next prime is 145984061. The reversal of 145984045 is 540489541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 540489541 = 173 ⋅3124217.

It can be written as a sum of positive squares in 2 ways, for example, as 29387241 + 116596804 = 5421^2 + 10798^2 .

It is a cyclic number.

It is not a de Polignac number, because 145984045 - 2¹ = 145984043 is a prime.

It is a super-3 number, since 3×145984045³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 145983989 and 145984007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145984043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14598400 + ... + 14598409.

It is an arithmetic number, because the mean of its divisors is an integer number (43795215).

Almost surely, 2^145984045 is an apocalyptic number.

It is an amenable number.

145984045 is a deficient number, since it is larger than the sum of its proper divisors (29196815).

145984045 is an equidigital number, since it uses as much as digits as its factorization.

145984045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29196814.

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 145984045 is about 12082.3857329585. The cubic root of 145984045 is about 526.5445610122.

The spelling of 145984045 in words is "one hundred forty-five million, nine hundred eighty-four thousand, forty-five".