5660521 has 2 divisors, whose sum is σ = 5660522. Its totient is φ = 5660520.

The previous prime is 5660513. The next prime is 5660527. The reversal of 5660521 is 1250665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4305625 + 1354896 = 2075^2 + 1164^2 .

It is a cyclic number.

It is not a de Polignac number, because 5660521 - 2³ = 5660513 is a prime.

It is not a weakly prime, because it can be changed into another prime (5660527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2830260 + 2830261.

It is an arithmetic number, because the mean of its divisors is an integer number (2830261).

Almost surely, 2^5660521 is an apocalyptic number.

It is an amenable number.

5660521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5660521 is an equidigital number, since it uses as much as digits as its factorization.

5660521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 5660521 is about 2379.1849444715. The cubic root of 5660521 is about 178.2182337808.

The spelling of 5660521 in words is "five million, six hundred sixty thousand, five hundred twenty-one".