241551421 has 2 divisors, whose sum is σ = 241551422. Its totient is φ = 241551420.

The previous prime is 241551407. The next prime is 241551433. The reversal of 241551421 is 124155142.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167832025 + 73719396 = 12955^2 + 8586^2 .

It is a cyclic number.

It is not a de Polignac number, because 241551421 - 2¹³ = 241543229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (241551461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120775710 + 120775711.

It is an arithmetic number, because the mean of its divisors is an integer number (120775711).

Almost surely, 2^241551421 is an apocalyptic number.

It is an amenable number.

241551421 is a deficient number, since it is larger than the sum of its proper divisors (1).

241551421 is an equidigital number, since it uses as much as digits as its factorization.

241551421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1600, while the sum is 25.

The square root of 241551421 is about 15541.9246234178. The cubic root of 241551421 is about 622.7826888727.

The spelling of 241551421 in words is "two hundred forty-one million, five hundred fifty-one thousand, four hundred twenty-one".