241509 has 12 divisors (see below), whose sum is σ = 341376. Its totient is φ = 151848.

The previous prime is 241489. The next prime is 241511. The reversal of 241509 is 905142.

It is not a de Polignac number, because 241509 - 2⁸ = 241253 is a prime.

241509 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (241559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 972 + ... + 1194.

It is an arithmetic number, because the mean of its divisors is an integer number (28448).

2²⁴¹⁵⁰⁹ is an apocalyptic number.

It is an amenable number.

241509 is a deficient number, since it is larger than the sum of its proper divisors (99867).

241509 is a wasteful number, since it uses less digits than its factorization.

241509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 241509 is about 491.4356519423. The cubic root of 241509 is about 62.2746229264.

The spelling of 241509 in words is "two hundred forty-one thousand, five hundred nine".