145641441 has 64 divisors (see below), whose sum is σ = 235929600. Its totient is φ = 78926400.

The previous prime is 145641437. The next prime is 145641443. The reversal of 145641441 is 144146541.

It is not a de Polignac number, because 145641441 - 2² = 145641437 is a prime.

It is a super-2 number, since 2×145641441² = 42422858673112962, 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 = 145641399 and 145641408.

It is not an unprimeable number, because it can be changed into a prime (145641443) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1146720 + ... + 1146846.

It is an arithmetic number, because the mean of its divisors is an integer number (3686400).

Almost surely, 2^145641441 is an apocalyptic number.

145641441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

145641441 is a deficient number, since it is larger than the sum of its proper divisors (90288159).

145641441 is a wasteful number, since it uses less digits than its factorization.

145641441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250.

The product of its digits is 7680, while the sum is 30.

The square root of 145641441 is about 12068.1995757445. The cubic root of 145641441 is about 526.1323297107.

Adding to 145641441 its reverse (144146541), we get a palindrome (289787982).

The spelling of 145641441 in words is "one hundred forty-five million, six hundred forty-one thousand, four hundred forty-one".