241505981 has 4 divisors (see below), whose sum is σ = 242570112. Its totient is φ = 240441852.

The previous prime is 241505963. The next prime is 241505987. The reversal of 241505981 is 189505142.

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 a cyclic number.

It is not a de Polignac number, because 241505981 - 2⁶ = 241505917 is a prime.

It is a super-2 number, since 2×241505981² = 116650277717544722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (241505987) 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, 531725 + ... + 532178.

It is an arithmetic number, because the mean of its divisors is an integer number (60642528).

Almost surely, 2^241505981 is an apocalyptic number.

It is an amenable number.

241505981 is a deficient number, since it is larger than the sum of its proper divisors (1064131).

241505981 is a wasteful number, since it uses less digits than its factorization.

241505981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064130.

The product of its (nonzero) digits is 14400, while the sum is 35.

The square root of 241505981 is about 15540.4627022492. The cubic root of 241505981 is about 622.7436343586.

The spelling of 241505981 in words is "two hundred forty-one million, five hundred five thousand, nine hundred eighty-one".