2881557 has 24 divisors (see below), whose sum is σ = 4852224. Its totient is φ = 1613664.

The previous prime is 2881547. The next prime is 2881561. The reversal of 2881557 is 7551882.

2881557 is a `hidden beast` number, since 28 + 81 + 557 = 666.

It is not a de Polignac number, because 2881557 - 2¹¹ = 2879509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2881547) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2908 + ... + 3770.

It is an arithmetic number, because the mean of its divisors is an integer number (202176).

2^2881557 is an apocalyptic number.

It is an amenable number.

2881557 is a deficient number, since it is larger than the sum of its proper divisors (1970667).

2881557 is a wasteful number, since it uses less digits than its factorization.

2881557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929 (or 926 counting only the distinct ones).

The product of its digits is 22400, while the sum is 36.

The square root of 2881557 is about 1697.5149483878. The cubic root of 2881557 is about 142.3013668331.

The spelling of 2881557 in words is "two million, eight hundred eighty-one thousand, five hundred fifty-seven".