13400553 has 8 divisors (see below), whose sum is σ = 17920000. Its totient is φ = 8907408.

The previous prime is 13400551. The next prime is 13400561. The reversal of 13400553 is 35500431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13400553 - 2¹ = 13400551 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13400551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5353 + ... + 7446.

It is an arithmetic number, because the mean of its divisors is an integer number (2240000).

Almost surely, 2^13400553 is an apocalyptic number.

It is an amenable number.

13400553 is a deficient number, since it is larger than the sum of its proper divisors (4519447).

13400553 is a wasteful number, since it uses less digits than its factorization.

13400553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13151.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 13400553 is about 3660.6765768093. The cubic root of 13400553 is about 237.5240411490.

Adding to 13400553 its reverse (35500431), we get a palindrome (48900984).

The spelling of 13400553 in words is "thirteen million, four hundred thousand, five hundred fifty-three".