5679521 has 2 divisors, whose sum is σ = 5679522. Its totient is φ = 5679520.

The previous prime is 5679511. The next prime is 5679539. The reversal of 5679521 is 1259765.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4389025 + 1290496 = 2095^2 + 1136^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5679521 is a prime.

It is not a weakly prime, because it can be changed into another prime (5679511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2839760 + 2839761.

It is an arithmetic number, because the mean of its divisors is an integer number (2839761).

Almost surely, 2^5679521 is an apocalyptic number.

It is an amenable number.

5679521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5679521 is an equidigital number, since it uses as much as digits as its factorization.

5679521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 35.

The square root of 5679521 is about 2383.1745634762. The cubic root of 5679521 is about 178.4174124350.

The spelling of 5679521 in words is "five million, six hundred seventy-nine thousand, five hundred twenty-one".