145641 has 8 divisors (see below), whose sum is σ = 198880. Its totient is φ = 94752.

The previous prime is 145637. The next prime is 145643. The reversal of 145641 is 146541.

145641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145641 - 2² = 145637 is a prime.

It is a super-2 number, since 2×145641² = 42422601762, which contains 22 as substring.

It is a Duffinian number.

145641 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (145643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436 + ... + 693.

It is an arithmetic number, because the mean of its divisors is an integer number (24860).

2¹⁴⁵⁶⁴¹ is an apocalyptic number.

It is an amenable number.

145641 is a deficient number, since it is larger than the sum of its proper divisors (53239).

145641 is a wasteful number, since it uses less digits than its factorization.

145641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175.

The product of its digits is 480, while the sum is 21.

The square root of 145641 is about 381.6294013831. The cubic root of 145641 is about 52.6131798670.

Subtracting from 145641 its product of digits (480), we obtain a square (145161 = 381²).

Subtracting 145641 from its reverse (146541), we obtain a square (900 = 30²).

The spelling of 145641 in words is "one hundred forty-five thousand, six hundred forty-one".