881257 has 4 divisors (see below), whose sum is σ = 949060. Its totient is φ = 813456.

The previous prime is 881249. The next prime is 881269. The reversal of 881257 is 752188.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 495616 + 385641 = 704^2 + 621^2 .

It is a cyclic number.

It is not a de Polignac number, because 881257 - 2³ = 881249 is a prime.

It is a super-2 number, since 2×881257² = 1553227800098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (881207) 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 in 3 ways as a sum of consecutive naturals, for example, 33882 + ... + 33907.

It is an arithmetic number, because the mean of its divisors is an integer number (237265).

2⁸⁸¹²⁵⁷ is an apocalyptic number.

It is an amenable number.

881257 is a deficient number, since it is larger than the sum of its proper divisors (67803).

881257 is a wasteful number, since it uses less digits than its factorization.

881257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67802.

The product of its digits is 4480, while the sum is 31.

The square root of 881257 is about 938.7528961340. The cubic root of 881257 is about 95.8740028182.

It can be divided in two parts, 8 and 81257, that multiplied together give a palindrome (650056).

The spelling of 881257 in words is "eight hundred eighty-one thousand, two hundred fifty-seven".