521536049 has 2 divisors, whose sum is σ = 521536050. Its totient is φ = 521536048.

The previous prime is 521536039. The next prime is 521536069. The reversal of 521536049 is 940635125.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 480486400 + 41049649 = 21920^2 + 6407^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-521536049 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (521536009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260768024 + 260768025.

It is an arithmetic number, because the mean of its divisors is an integer number (260768025).

Almost surely, 2^521536049 is an apocalyptic number.

It is an amenable number.

521536049 is a deficient number, since it is larger than the sum of its proper divisors (1).

521536049 is an equidigital number, since it uses as much as digits as its factorization.

521536049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 521536049 is about 22837.1637687345. The cubic root of 521536049 is about 804.9361722987.

The spelling of 521536049 in words is "five hundred twenty-one million, five hundred thirty-six thousand, forty-nine".