5637521 has 2 divisors, whose sum is σ = 5637522. Its totient is φ = 5637520.

The previous prime is 5637493. The next prime is 5637563. The reversal of 5637521 is 1257365.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5456896 + 180625 = 2336^2 + 425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5637521 is a prime.

It is not a weakly prime, because it can be changed into another prime (5637221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2818760 + 2818761.

It is an arithmetic number, because the mean of its divisors is an integer number (2818761).

Almost surely, 2^5637521 is an apocalyptic number.

It is an amenable number.

5637521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5637521 is an equidigital number, since it uses as much as digits as its factorization.

5637521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6300, while the sum is 29.

The square root of 5637521 is about 2374.3464363904. The cubic root of 5637521 is about 177.9765255413.

The spelling of 5637521 in words is "five million, six hundred thirty-seven thousand, five hundred twenty-one".