877541081 has 4 divisors (see below), whose sum is σ = 898944564. Its totient is φ = 856137600.

The previous prime is 877541051. The next prime is 877541083. The reversal of 877541081 is 180145778.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 180145778 = 2 ⋅90072889.

It can be written as a sum of positive squares in 2 ways, for example, as 15531481 + 862009600 = 3941^2 + 29360^2 .

It is a cyclic number.

It is not a de Polignac number, because 877541081 - 2⁶ = 877541017 is a prime.

It is a super-2 number, since 2×877541081² = 1540156697685297122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 21403441 = 877541081 / (8 + 7 + 7 + 5 + 4 + 1 + 0 + 8 + 1).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (877541083) 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, 10701680 + ... + 10701761.

It is an arithmetic number, because the mean of its divisors is an integer number (224736141).

Almost surely, 2^877541081 is an apocalyptic number.

It is an amenable number.

877541081 is a deficient number, since it is larger than the sum of its proper divisors (21403483).

877541081 is a wasteful number, since it uses less digits than its factorization.

877541081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21403482.

The product of its (nonzero) digits is 62720, while the sum is 41.

The square root of 877541081 is about 29623.3198848475. The cubic root of 877541081 is about 957.3905847474.

The spelling of 877541081 in words is "eight hundred seventy-seven million, five hundred forty-one thousand, eighty-one".