7881055 has 16 divisors (see below), whose sum is σ = 11640384. Its totient is φ = 4988160.

The previous prime is 7881031. The next prime is 7881059. The reversal of 7881055 is 5501887.

It is not a de Polignac number, because 7881055 - 2⁵ = 7881023 is a prime.

It is a super-2 number, since 2×7881055² = 124222055826050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7881055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7881059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8206 + ... + 9115.

It is an arithmetic number, because the mean of its divisors is an integer number (727524).

Almost surely, 2^7881055 is an apocalyptic number.

7881055 is a deficient number, since it is larger than the sum of its proper divisors (3759329).

7881055 is a wasteful number, since it uses less digits than its factorization.

7881055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17346.

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

The square root of 7881055 is about 2807.3216773288. The cubic root of 7881055 is about 199.0038382129.

The spelling of 7881055 in words is "seven million, eight hundred eighty-one thousand, fifty-five".