13507447 has 2 divisors, whose sum is σ = 13507448. Its totient is φ = 13507446.

The previous prime is 13507433. The next prime is 13507451. The reversal of 13507447 is 74470531.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13507447 is a prime.

It is a super-2 number, since 2×13507447² = 364902248915618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13507427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6753723 + 6753724.

It is an arithmetic number, because the mean of its divisors is an integer number (6753724).

Almost surely, 2^13507447 is an apocalyptic number.

13507447 is a deficient number, since it is larger than the sum of its proper divisors (1).

13507447 is an equidigital number, since it uses as much as digits as its factorization.

13507447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 13507447 is about 3675.2478827965. The cubic root of 13507447 is about 238.1539326198.

Adding to 13507447 its reverse (74470531), we get a palindrome (87977978).

The spelling of 13507447 in words is "thirteen million, five hundred seven thousand, four hundred forty-seven".