241521 has 24 divisors (see below), whose sum is σ = 393984. Its totient is φ = 131040.

The previous prime is 241517. The next prime is 241537. The reversal of 241521 is 125142.

It is not a de Polignac number, because 241521 - 2² = 241517 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 241521.

It is not an unprimeable number, because it can be changed into a prime (241511) 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, 4531 + ... + 4583.

It is an arithmetic number, because the mean of its divisors is an integer number (16416).

2²⁴¹⁵²¹ is an apocalyptic number.

241521 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

241521 is a deficient number, since it is larger than the sum of its proper divisors (152463).

241521 is a wasteful number, since it uses less digits than its factorization.

241521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 94 counting only the distinct ones).

The product of its digits is 80, while the sum is 15.

The square root of 241521 is about 491.4478609171. The cubic root of 241521 is about 62.2756543346.

Adding to 241521 its reverse (125142), we get a palindrome (366663).

The spelling of 241521 in words is "two hundred forty-one thousand, five hundred twenty-one".