5135521 has 2 divisors, whose sum is σ = 5135522. Its totient is φ = 5135520.

The previous prime is 5135503. The next prime is 5135527. The reversal of 5135521 is 1255315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4389025 + 746496 = 2095^2 + 864^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5135521 is a prime.

5135521 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 5135492 and 5135501.

It is not a weakly prime, because it can be changed into another prime (5135527) 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, 2567760 + 2567761.

It is an arithmetic number, because the mean of its divisors is an integer number (2567761).

Almost surely, 2^5135521 is an apocalyptic number.

It is an amenable number.

5135521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5135521 is an equidigital number, since it uses as much as digits as its factorization.

5135521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 750, while the sum is 22.

The square root of 5135521 is about 2266.1687933603. The cubic root of 5135521 is about 172.5287608699.

The spelling of 5135521 in words is "five million, one hundred thirty-five thousand, five hundred twenty-one".