881557 has 4 divisors (see below), whose sum is σ = 883456. Its totient is φ = 879660.

The previous prime is 881539. The next prime is 881591. The reversal of 881557 is 755188.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 881557 - 2¹⁵ = 848789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (881527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268 + ... + 1354.

It is an arithmetic number, because the mean of its divisors is an integer number (220864).

2⁸⁸¹⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

881557 is a deficient number, since it is larger than the sum of its proper divisors (1899).

881557 is a wasteful number, since it uses less digits than its factorization.

881557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898.

The product of its digits is 11200, while the sum is 34.

The square root of 881557 is about 938.9126689954. The cubic root of 881557 is about 95.8848808169.

The spelling of 881557 in words is "eight hundred eighty-one thousand, five hundred fifty-seven".