13404451 has 2 divisors, whose sum is σ = 13404452. Its totient is φ = 13404450.

The previous prime is 13404427. The next prime is 13404509. The reversal of 13404451 is 15440431.

It is a weak prime.

It is an emirp because it is prime and its reverse (15440431) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13404451 is a prime.

It is a super-2 number, since 2×13404451² = 359358613222802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13405451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6702225 + 6702226.

It is an arithmetic number, because the mean of its divisors is an integer number (6702226).

Almost surely, 2^13404451 is an apocalyptic number.

13404451 is a deficient number, since it is larger than the sum of its proper divisors (1).

13404451 is an equidigital number, since it uses as much as digits as its factorization.

13404451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 13404451 is about 3661.2089533377. The cubic root of 13404451 is about 237.5470695258.

Adding to 13404451 its reverse (15440431), we get a palindrome (28844882).

The spelling of 13404451 in words is "thirteen million, four hundred four thousand, four hundred fifty-one".