145344441 has 24 divisors (see below), whose sum is σ = 224286624. Its totient is φ = 82743040.

The previous prime is 145344403. The next prime is 145344457. The reversal of 145344441 is 144443541.

It is not a de Polignac number, because 145344441 - 2⁹ = 145343929 is a prime.

It is a super-2 number, since 2×145344441² = 42250013059204962, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 145344399 and 145344408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145344401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 285295 + ... + 285803.

It is an arithmetic number, because the mean of its divisors is an integer number (9345276).

Almost surely, 2^145344441 is an apocalyptic number.

145344441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

145344441 is a deficient number, since it is larger than the sum of its proper divisors (78942183).

145344441 is an equidigital number, since it uses as much as digits as its factorization.

145344441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049 (or 540 counting only the distinct ones).

The product of its digits is 15360, while the sum is 30.

The square root of 145344441 is about 12055.8882294089. Note that the first 3 decimals coincide. The cubic root of 145344441 is about 525.7744470453.

Adding to 145344441 its reverse (144443541), we get a palindrome (289787982).

The spelling of 145344441 in words is "one hundred forty-five million, three hundred forty-four thousand, four hundred forty-one".