13895557 has 4 divisors (see below), whose sum is σ = 14964460. Its totient is φ = 12826656.

The previous prime is 13895543. The next prime is 13895561. The reversal of 13895557 is 75559831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1285956 + 12609601 = 1134^2 + 3551^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13895557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13895507) 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, 534432 + ... + 534457.

It is an arithmetic number, because the mean of its divisors is an integer number (3741115).

Almost surely, 2^13895557 is an apocalyptic number.

It is an amenable number.

13895557 is a deficient number, since it is larger than the sum of its proper divisors (1068903).

13895557 is a wasteful number, since it uses less digits than its factorization.

13895557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068902.

The product of its digits is 189000, while the sum is 43.

The square root of 13895557 is about 3727.6744761312. The cubic root of 13895557 is about 240.4133905515.

The spelling of 13895557 in words is "thirteen million, eight hundred ninety-five thousand, five hundred fifty-seven".