145404541 has 4 divisors (see below), whose sum is σ = 147788284. Its totient is φ = 143020800.

The previous prime is 145404533. The next prime is 145404563.

145404541 is nontrivially palindromic in base 10.

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 3437316 + 141967225 = 1854^2 + 11915^2 .

It is a cyclic number.

It is not a de Polignac number, because 145404541 - 2³ = 145404533 is a prime.

It is a super-2 number, since 2×145404541² = 42284961086841362, 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 (145404341) 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, 1191780 + ... + 1191901.

It is an arithmetic number, because the mean of its divisors is an integer number (36947071).

Almost surely, 2^145404541 is an apocalyptic number.

It is an amenable number.

145404541 is a deficient number, since it is larger than the sum of its proper divisors (2383743).

145404541 is an equidigital number, since it uses as much as digits as its factorization.

145404541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2383742.

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 145404541 is about 12058.3805297395. The cubic root of 145404541 is about 525.8469063923.

The spelling of 145404541 in words is "one hundred forty-five million, four hundred four thousand, five hundred forty-one".