2887521 has 24 divisors (see below), whose sum is σ = 4826304. Its totient is φ = 1522080.

The previous prime is 2887513. The next prime is 2887523. The reversal of 2887521 is 1257882.

It is not a de Polignac number, because 2887521 - 2³ = 2887513 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2887523) 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, 1156 + ... + 2666.

It is an arithmetic number, because the mean of its divisors is an integer number (201096).

2^2887521 is an apocalyptic number.

2887521 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2887521 is a deficient number, since it is larger than the sum of its proper divisors (1938783).

2887521 is a wasteful number, since it uses less digits than its factorization.

2887521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541 (or 1534 counting only the distinct ones).

The product of its digits is 8960, while the sum is 33.

The square root of 2887521 is about 1699.2707259292. The cubic root of 2887521 is about 142.3994735757.

The spelling of 2887521 in words is "two million, eight hundred eighty-seven thousand, five hundred twenty-one".