13473521 has 2 divisors, whose sum is σ = 13473522. Its totient is φ = 13473520.

The previous prime is 13473517. The next prime is 13473563. The reversal of 13473521 is 12537431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12503296 + 970225 = 3536^2 + 985^2 .

It is a cyclic number.

It is not a de Polignac number, because 13473521 - 2² = 13473517 is a prime.

It is not a weakly prime, because it can be changed into another prime (13473221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6736760 + 6736761.

It is an arithmetic number, because the mean of its divisors is an integer number (6736761).

Almost surely, 2^13473521 is an apocalyptic number.

It is an amenable number.

13473521 is a deficient number, since it is larger than the sum of its proper divisors (1).

13473521 is an equidigital number, since it uses as much as digits as its factorization.

13473521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 26.

The square root of 13473521 is about 3670.6295100432. The cubic root of 13473521 is about 237.9543788931.

The spelling of 13473521 in words is "thirteen million, four hundred seventy-three thousand, five hundred twenty-one".