145911549 has 16 divisors (see below), whose sum is σ = 223170560. Its totient is φ = 83067120.

The previous prime is 145911541. The next prime is 145911553. The reversal of 145911549 is 945119541.

It is not a de Polignac number, because 145911549 - 2³ = 145911541 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145911541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7129 + ... + 18510.

It is an arithmetic number, because the mean of its divisors is an integer number (13948160).

Almost surely, 2^145911549 is an apocalyptic number.

It is an amenable number.

145911549 is a deficient number, since it is larger than the sum of its proper divisors (77259011).

145911549 is a wasteful number, since it uses less digits than its factorization.

145911549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25920.

The product of its digits is 32400, while the sum is 39.

The square root of 145911549 is about 12079.3852906512. The cubic root of 145911549 is about 526.4573855151.

The spelling of 145911549 in words is "one hundred forty-five million, nine hundred eleven thousand, five hundred forty-nine".