240897541 has 2 divisors, whose sum is σ = 240897542. Its totient is φ = 240897540.

The previous prime is 240897539. The next prime is 240897557. The reversal of 240897541 is 145798042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122544900 + 118352641 = 11070^2 + 10879^2 .

It is a cyclic number.

It is not a de Polignac number, because 240897541 - 2¹ = 240897539 is a prime.

Together with 240897539, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 240897494 and 240897503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240897571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120448770 + 120448771.

It is an arithmetic number, because the mean of its divisors is an integer number (120448771).

Almost surely, 2^240897541 is an apocalyptic number.

It is an amenable number.

240897541 is a deficient number, since it is larger than the sum of its proper divisors (1).

240897541 is an equidigital number, since it uses as much as digits as its factorization.

240897541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 240897541 is about 15520.8743632567. The cubic root of 240897541 is about 622.2202231949.

The spelling of 240897541 in words is "two hundred forty million, eight hundred ninety-seven thousand, five hundred forty-one".