2405741521 has 2 divisors, whose sum is σ = 2405741522. Its totient is φ = 2405741520.

The previous prime is 2405741489. The next prime is 2405741549. The reversal of 2405741521 is 1251475042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1265936400 + 1139805121 = 35580^2 + 33761^2 .

It is a cyclic number.

It is not a de Polignac number, because 2405741521 - 2⁵ = 2405741489 is a prime.

It is not a weakly prime, because it can be changed into another prime (2405747521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1202870760 + 1202870761.

It is an arithmetic number, because the mean of its divisors is an integer number (1202870761).

Almost surely, 2^2405741521 is an apocalyptic number.

It is an amenable number.

2405741521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2405741521 is an equidigital number, since it uses as much as digits as its factorization.

2405741521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 2405741521 is about 49048.3590041502. The cubic root of 2405741521 is about 1339.9327063927.

The spelling of 2405741521 in words is "two billion, four hundred five million, seven hundred forty-one thousand, five hundred twenty-one".