528775381 has 2 divisors, whose sum is σ = 528775382. Its totient is φ = 528775380.

The previous prime is 528775369. The next prime is 528775393. The reversal of 528775381 is 183577825.

It is a balanced prime because it is at equal distance from previous prime (528775369) and next prime (528775393).

It can be written as a sum of positive squares in only one way, i.e., 296700625 + 232074756 = 17225^2 + 15234^2 .

It is a cyclic number.

It is not a de Polignac number, because 528775381 - 2⁷ = 528775253 is a prime.

It is a super-2 number, since 2×528775381² = 559206807103390322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (528775781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264387690 + 264387691.

It is an arithmetic number, because the mean of its divisors is an integer number (264387691).

Almost surely, 2^528775381 is an apocalyptic number.

It is an amenable number.

528775381 is a deficient number, since it is larger than the sum of its proper divisors (1).

528775381 is an equidigital number, since it uses as much as digits as its factorization.

528775381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 470400, while the sum is 46.

The square root of 528775381 is about 22995.1164598051. The cubic root of 528775381 is about 808.6434546427.

The spelling of 528775381 in words is "five hundred twenty-eight million, seven hundred seventy-five thousand, three hundred eighty-one".