241485781 has 2 divisors, whose sum is σ = 241485782. Its totient is φ = 241485780.

The previous prime is 241485757. The next prime is 241485787. The reversal of 241485781 is 187584142.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241305156 + 180625 = 15534^2 + 425^2 .

It is a cyclic number.

It is not a de Polignac number, because 241485781 - 2⁵ = 241485749 is a prime.

It is a super-2 number, since 2×241485781² = 116630764850359922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (241485787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120742890 + 120742891.

It is an arithmetic number, because the mean of its divisors is an integer number (120742891).

Almost surely, 2^241485781 is an apocalyptic number.

It is an amenable number.

241485781 is a deficient number, since it is larger than the sum of its proper divisors (1).

241485781 is an equidigital number, since it uses as much as digits as its factorization.

241485781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 71680, while the sum is 40.

The square root of 241485781 is about 15539.8127723599. The cubic root of 241485781 is about 622.7262714040.

It can be divided in two parts, 24148 and 5781, that added together give a square (29929 = 173²).

The spelling of 241485781 in words is "two hundred forty-one million, four hundred eighty-five thousand, seven hundred eighty-one".