881555481 has 15 divisors (see below), whose sum is σ = 1317290821. Its totient is φ = 587525508.

The previous prime is 881555459. The next prime is 881555491. The reversal of 881555481 is 184555188.

The square root of 881555481 is 29691.

It is a perfect power (a square), and thus also a powerful number.

881555481 is a `hidden beast` number, since 8 + 8 + 15 + 554 + 81 = 666.

It is not a de Polignac number, because 881555481 - 2⁵ = 881555449 is a prime.

It is a super-2 number, since 2×881555481² = 1554280132162282722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (881555491) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 265570 + ... + 268868.

Almost surely, 2^881555481 is an apocalyptic number.

881555481 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

881555481 is the 29691-st square number.

881555481 is the 14846-th centered octagonal number.

It is an amenable number.

881555481 is a deficient number, since it is larger than the sum of its proper divisors (435735340).

881555481 is an frugal number, since it uses more digits than its factorization.

881555481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6610 (or 3302 counting only the distinct ones).

The product of its digits is 256000, while the sum is 45.

The cubic root of 881555481 is about 958.8482574423.

It can be divided in two parts, 88155 and 5481, that added together give a square (93636 = 306²).

The spelling of 881555481 in words is "eight hundred eighty-one million, five hundred fifty-five thousand, four hundred eighty-one".