144885145 has 4 divisors (see below), whose sum is σ = 173862180. Its totient is φ = 115908112.

The previous prime is 144885137. The next prime is 144885157. The reversal of 144885145 is 541588441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541588441 = 281 ⋅1927361.

It can be written as a sum of positive squares in 2 ways, for example, as 24522304 + 120362841 = 4952^2 + 10971^2 .

It is a cyclic number.

It is not a de Polignac number, because 144885145 - 2³ = 144885137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 144885098 and 144885107.

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, 14488510 + ... + 14488519.

It is an arithmetic number, because the mean of its divisors is an integer number (43465545).

Almost surely, 2^144885145 is an apocalyptic number.

It is an amenable number.

144885145 is a deficient number, since it is larger than the sum of its proper divisors (28977035).

144885145 is an equidigital number, since it uses as much as digits as its factorization.

144885145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28977034.

The product of its digits is 102400, while the sum is 40.

The square root of 144885145 is about 12036.8245397198. The cubic root of 144885145 is about 525.2200377725.

The spelling of 144885145 in words is "one hundred forty-four million, eight hundred eighty-five thousand, one hundred forty-five".