145541345 has 4 divisors (see below), whose sum is σ = 174649620. Its totient is φ = 116433072.

The previous prime is 145541329. The next prime is 145541351. The reversal of 145541345 is 543145541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543145541 = 5657 ⋅96013.

It can be written as a sum of positive squares in 2 ways, for example, as 111154849 + 34386496 = 10543^2 + 5864^2 .

It is a cyclic number.

It is not a de Polignac number, because 145541345 - 2⁴ = 145541329 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14554130 + ... + 14554139.

It is an arithmetic number, because the mean of its divisors is an integer number (43662405).

Almost surely, 2^145541345 is an apocalyptic number.

It is an amenable number.

145541345 is a deficient number, since it is larger than the sum of its proper divisors (29108275).

145541345 is an equidigital number, since it uses as much as digits as its factorization.

145541345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29108274.

The product of its digits is 24000, while the sum is 32.

The square root of 145541345 is about 12064.0517654725. The cubic root of 145541345 is about 526.0117692191.

Adding to 145541345 its reverse (543145541), we get a palindrome (688686886).

The spelling of 145541345 in words is "one hundred forty-five million, five hundred forty-one thousand, three hundred forty-five".