241781357 has 2 divisors, whose sum is σ = 241781358. Its totient is φ = 241781356.

The previous prime is 241781339. The next prime is 241781383. The reversal of 241781357 is 753187142.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 226773481 + 15007876 = 15059^2 + 3874^2 .

It is a cyclic number.

It is not a de Polignac number, because 241781357 - 2⁸ = 241781101 is a prime.

It is a super-2 number, since 2×241781357² = 116916449185522898, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 241781357.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (241789357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120890678 + 120890679.

It is an arithmetic number, because the mean of its divisors is an integer number (120890679).

Almost surely, 2^241781357 is an apocalyptic number.

It is an amenable number.

241781357 is a deficient number, since it is larger than the sum of its proper divisors (1).

241781357 is an equidigital number, since it uses as much as digits as its factorization.

241781357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 38.

The square root of 241781357 is about 15549.3201459099. The cubic root of 241781357 is about 622.9802379021.

The spelling of 241781357 in words is "two hundred forty-one million, seven hundred eighty-one thousand, three hundred fifty-seven".