240520549 has 2 divisors, whose sum is σ = 240520550. Its totient is φ = 240520548.

The previous prime is 240520547. The next prime is 240520561. The reversal of 240520549 is 945025042.

240520549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152028900 + 88491649 = 12330^2 + 9407^2 .

It is a cyclic number.

It is not a de Polignac number, because 240520549 - 2¹ = 240520547 is a prime.

It is a super-2 number, since 2×240520549² = 115700268982522802, which contains 22 as substring.

Together with 240520547, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 240520549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240520547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120260274 + 120260275.

It is an arithmetic number, because the mean of its divisors is an integer number (120260275).

Almost surely, 2^240520549 is an apocalyptic number.

It is an amenable number.

240520549 is a deficient number, since it is larger than the sum of its proper divisors (1).

240520549 is an equidigital number, since it uses as much as digits as its factorization.

240520549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 240520549 is about 15508.7249314700. The cubic root of 240520549 is about 621.8954730733.

The spelling of 240520549 in words is "two hundred forty million, five hundred twenty thousand, five hundred forty-nine".