145545541 has 4 divisors (see below), whose sum is σ = 151873632. Its totient is φ = 139217452.

The previous prime is 145545509. The next prime is 145545581.

145545541 is nontrivially palindromic in base 10.

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 a cyclic number.

It is not a de Polignac number, because 145545541 - 2⁵ = 145545509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145545497 and 145545506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145545581) 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, 3164011 + ... + 3164056.

It is an arithmetic number, because the mean of its divisors is an integer number (37968408).

Almost surely, 2^145545541 is an apocalyptic number.

It is an amenable number.

145545541 is a deficient number, since it is larger than the sum of its proper divisors (6328091).

145545541 is an equidigital number, since it uses as much as digits as its factorization.

145545541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6328090.

The product of its digits is 40000, while the sum is 34.

The square root of 145545541 is about 12064.2256693084. The cubic root of 145545541 is about 526.0168241955.

Adding to 145545541 its product of digits (40000), we get a palindrome (145585541).

Subtracting from 145545541 its product of digits (40000), we obtain a palindrome (145505541).

The spelling of 145545541 in words is "one hundred forty-five million, five hundred forty-five thousand, five hundred forty-one".