528537389 has 2 divisors, whose sum is σ = 528537390. Its totient is φ = 528537388.

The previous prime is 528537379. The next prime is 528537431. The reversal of 528537389 is 983735825.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 385926025 + 142611364 = 19645^2 + 11942^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-528537389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (528537349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264268694 + 264268695.

It is an arithmetic number, because the mean of its divisors is an integer number (264268695).

Almost surely, 2^528537389 is an apocalyptic number.

It is an amenable number.

528537389 is a deficient number, since it is larger than the sum of its proper divisors (1).

528537389 is an equidigital number, since it uses as much as digits as its factorization.

528537389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1814400, while the sum is 50.

The square root of 528537389 is about 22989.9410395068. The cubic root of 528537389 is about 808.5221179592.

The spelling of 528537389 in words is "five hundred twenty-eight million, five hundred thirty-seven thousand, three hundred eighty-nine".