527645381 has 2 divisors, whose sum is σ = 527645382. Its totient is φ = 527645380.

The previous prime is 527645357. The next prime is 527645407. The reversal of 527645381 is 183546725.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 525968356 + 1677025 = 22934^2 + 1295^2 .

It is a cyclic number.

It is not a de Polignac number, because 527645381 - 2⁶ = 527645317 is a prime.

It is a super-2 number, since 2×527645381² = 556819296181270322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (527645081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263822690 + 263822691.

It is an arithmetic number, because the mean of its divisors is an integer number (263822691).

Almost surely, 2^527645381 is an apocalyptic number.

It is an amenable number.

527645381 is a deficient number, since it is larger than the sum of its proper divisors (1).

527645381 is an equidigital number, since it uses as much as digits as its factorization.

527645381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 41.

The square root of 527645381 is about 22970.5328845458. The cubic root of 527645381 is about 808.0670165675.

The spelling of 527645381 in words is "five hundred twenty-seven million, six hundred forty-five thousand, three hundred eighty-one".