881539 has 2 divisors, whose sum is σ = 881540. Its totient is φ = 881538.

The previous prime is 881537. The next prime is 881591. The reversal of 881539 is 935188.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 881539 - 2¹ = 881537 is a prime.

It is a super-2 number, since 2×881539² = 1554222017042, which contains 22 as substring.

Together with 881537, it forms a pair of twin primes.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (881533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440769 + 440770.

It is an arithmetic number, because the mean of its divisors is an integer number (440770).

2⁸⁸¹⁵³⁹ is an apocalyptic number.

881539 is a deficient number, since it is larger than the sum of its proper divisors (1).

881539 is an equidigital number, since it uses as much as digits as its factorization.

881539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 34.

The square root of 881539 is about 938.9030833904. The cubic root of 881539 is about 95.8842282066.

The spelling of 881539 in words is "eight hundred eighty-one thousand, five hundred thirty-nine".