527881381 has 2 divisors, whose sum is σ = 527881382. Its totient is φ = 527881380.

The previous prime is 527881357. The next prime is 527881457. The reversal of 527881381 is 183188725.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 484440100 + 43441281 = 22010^2 + 6591^2 .

It is a cyclic number.

It is not a de Polignac number, because 527881381 - 2⁹ = 527880869 is a prime.

It is a super-2 number, since 2×527881381² = 557317504812934322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (527881681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263940690 + 263940691.

It is an arithmetic number, because the mean of its divisors is an integer number (263940691).

Almost surely, 2^527881381 is an apocalyptic number.

It is an amenable number.

527881381 is a deficient number, since it is larger than the sum of its proper divisors (1).

527881381 is an equidigital number, since it uses as much as digits as its factorization.

527881381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 107520, while the sum is 43.

The square root of 527881381 is about 22975.6693264854. The cubic root of 527881381 is about 808.1874733476.

The spelling of 527881381 in words is "five hundred twenty-seven million, eight hundred eighty-one thousand, three hundred eighty-one".