241817561 has 4 divisors (see below), whose sum is σ = 252331392. Its totient is φ = 231303732.

The previous prime is 241817531. The next prime is 241817567. The reversal of 241817561 is 165718142.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 241817561 - 2²² = 237623257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (241817567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5256881 + ... + 5256926.

It is an arithmetic number, because the mean of its divisors is an integer number (63082848).

Almost surely, 2^241817561 is an apocalyptic number.

It is an amenable number.

241817561 is a deficient number, since it is larger than the sum of its proper divisors (10513831).

241817561 is a wasteful number, since it uses less digits than its factorization.

241817561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10513830.

The product of its digits is 13440, while the sum is 35.

The square root of 241817561 is about 15550.4842689866. The cubic root of 241817561 is about 623.0113310781.

The spelling of 241817561 in words is "two hundred forty-one million, eight hundred seventeen thousand, five hundred sixty-one".