881209555 has 4 divisors (see below), whose sum is σ = 1057451472. Its totient is φ = 704967640.

The previous prime is 881209487. The next prime is 881209561. The reversal of 881209555 is 555902188.

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

It is not a de Polignac number, because 881209555 - 2²³ = 872820947 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88120951 + ... + 88120960.

It is an arithmetic number, because the mean of its divisors is an integer number (264362868).

Almost surely, 2^881209555 is an apocalyptic number.

881209555 is a deficient number, since it is larger than the sum of its proper divisors (176241917).

881209555 is a wasteful number, since it uses less digits than its factorization.

881209555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176241916.

The product of its (nonzero) digits is 144000, while the sum is 43.

The square root of 881209555 is about 29685.1739930895. The cubic root of 881209555 is about 958.7228223659.

The spelling of 881209555 in words is "eight hundred eighty-one million, two hundred nine thousand, five hundred fifty-five".