241815 has 32 divisors (see below), whose sum is σ = 460800. Its totient is φ = 108192.

The previous prime is 241811. The next prime is 241817. The reversal of 241815 is 518142.

It is not a de Polignac number, because 241815 - 2² = 241811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

241815 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 241791 and 241800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (241811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5122 + ... + 5168.

It is an arithmetic number, because the mean of its divisors is an integer number (14400).

2²⁴¹⁸¹⁵ is an apocalyptic number.

241815 is a deficient number, since it is larger than the sum of its proper divisors (218985).

241815 is an equidigital number, since it uses as much as digits as its factorization.

241815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76 (or 62 counting only the distinct ones).

The product of its digits is 320, while the sum is 21.

The square root of 241815 is about 491.7468861111. The cubic root of 241815 is about 62.3009131710.

Adding to 241815 its reverse (518142), we get a palindrome (759957).

The spelling of 241815 in words is "two hundred forty-one thousand, eight hundred fifteen".