13137473 has 2 divisors, whose sum is σ = 13137474. Its totient is φ = 13137472.

The previous prime is 13137461. The next prime is 13137491. The reversal of 13137473 is 37473131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11641744 + 1495729 = 3412^2 + 1223^2 .

It is an emirp because it is prime and its reverse (37473131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13137473 - 2⁴ = 13137457 is a prime.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (13137673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6568736 + 6568737.

It is an arithmetic number, because the mean of its divisors is an integer number (6568737).

Almost surely, 2^13137473 is an apocalyptic number.

It is an amenable number.

13137473 is a deficient number, since it is larger than the sum of its proper divisors (1).

13137473 is an equidigital number, since it uses as much as digits as its factorization.

13137473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5292, while the sum is 29.

The square root of 13137473 is about 3624.5652153051. The cubic root of 13137473 is about 235.9593976401.

The spelling of 13137473 in words is "thirteen million, one hundred thirty-seven thousand, four hundred seventy-three".