145089541 has 2 divisors, whose sum is σ = 145089542. Its totient is φ = 145089540.

The previous prime is 145089493. The next prime is 145089551. The reversal of 145089541 is 145980541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144360225 + 729316 = 12015^2 + 854^2 .

It is a cyclic number.

It is not a de Polignac number, because 145089541 - 2²⁷ = 10871813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145089541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145089551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72544770 + 72544771.

It is an arithmetic number, because the mean of its divisors is an integer number (72544771).

Almost surely, 2^145089541 is an apocalyptic number.

It is an amenable number.

145089541 is a deficient number, since it is larger than the sum of its proper divisors (1).

145089541 is an equidigital number, since it uses as much as digits as its factorization.

145089541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 145089541 is about 12045.3119926385. The cubic root of 145089541 is about 525.4669055745.

The spelling of 145089541 in words is "one hundred forty-five million, eighty-nine thousand, five hundred forty-one".