521028049 has 2 divisors, whose sum is σ = 521028050. Its totient is φ = 521028048.

The previous prime is 521028037. The next prime is 521028061. The reversal of 521028049 is 940820125.

It is a balanced prime because it is at equal distance from previous prime (521028037) and next prime (521028061).

It can be written as a sum of positive squares in only one way, i.e., 275792449 + 245235600 = 16607^2 + 15660^2 .

It is a cyclic number.

It is not a de Polignac number, because 521028049 - 2⁷ = 521027921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 521028049.

It is not a weakly prime, because it can be changed into another prime (521028149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260514024 + 260514025.

It is an arithmetic number, because the mean of its divisors is an integer number (260514025).

Almost surely, 2^521028049 is an apocalyptic number.

It is an amenable number.

521028049 is a deficient number, since it is larger than the sum of its proper divisors (1).

521028049 is an equidigital number, since it uses as much as digits as its factorization.

521028049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 521028049 is about 22826.0388372578. The cubic root of 521028049 is about 804.6747391641.

The spelling of 521028049 in words is "five hundred twenty-one million, twenty-eight thousand, forty-nine".