5787521 has 4 divisors (see below), whose sum is σ = 5838852. Its totient is φ = 5736192.

The previous prime is 5787511. The next prime is 5787541. The reversal of 5787521 is 1257875.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 774400 + 5013121 = 880^2 + 2239^2 .

It is a cyclic number.

It is not a de Polignac number, because 5787521 - 2²² = 1593217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5787511) 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, 25496 + ... + 25721.

It is an arithmetic number, because the mean of its divisors is an integer number (1459713).

Almost surely, 2^5787521 is an apocalyptic number.

It is an amenable number.

5787521 is a deficient number, since it is larger than the sum of its proper divisors (51331).

5787521 is a wasteful number, since it uses less digits than its factorization.

5787521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51330.

The product of its digits is 19600, while the sum is 35.

The square root of 5787521 is about 2405.7267093334. The cubic root of 5787521 is about 179.5412288295.

It can be divided in two parts, 57 and 87521, that added together give a palindrome (87578).

The spelling of 5787521 in words is "five million, seven hundred eighty-seven thousand, five hundred twenty-one".