528346649 has 2 divisors, whose sum is σ = 528346650. Its totient is φ = 528346648.

The previous prime is 528346619. The next prime is 528346669. The reversal of 528346649 is 946643825.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 388090000 + 140256649 = 19700^2 + 11843^2 .

It is a cyclic number.

It is not a de Polignac number, because 528346649 - 2²⁸ = 259911193 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 (528346619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264173324 + 264173325.

It is an arithmetic number, because the mean of its divisors is an integer number (264173325).

Almost surely, 2^528346649 is an apocalyptic number.

It is an amenable number.

528346649 is a deficient number, since it is larger than the sum of its proper divisors (1).

528346649 is an equidigital number, since it uses as much as digits as its factorization.

528346649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 47.

The square root of 528346649 is about 22985.7923291759. The cubic root of 528346649 is about 808.4248457086.

The spelling of 528346649 in words is "five hundred twenty-eight million, three hundred forty-six thousand, six hundred forty-nine".