13478851 has 4 divisors (see below), whose sum is σ = 14064912. Its totient is φ = 12892792.

The previous prime is 13478849. The next prime is 13478863. The reversal of 13478851 is 15887431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15887431 = 7 ⋅2269633.

It is a cyclic number.

It is not a de Polignac number, because 13478851 - 2¹ = 13478849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13478851.

It is not an unprimeable number, because it can be changed into a prime (13478051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292996 + ... + 293041.

It is an arithmetic number, because the mean of its divisors is an integer number (3516228).

Almost surely, 2^13478851 is an apocalyptic number.

13478851 is a deficient number, since it is larger than the sum of its proper divisors (586061).

13478851 is an equidigital number, since it uses as much as digits as its factorization.

13478851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586060.

The product of its digits is 26880, while the sum is 37.

The square root of 13478851 is about 3671.3554717570. The cubic root of 13478851 is about 237.9857522719.

It can be divided in two parts, 13 and 478851, that added together give a square (478864 = 692²).

The spelling of 13478851 in words is "thirteen million, four hundred seventy-eight thousand, eight hundred fifty-one".