13853557 has 2 divisors, whose sum is σ = 13853558. Its totient is φ = 13853556.

The previous prime is 13853551. The next prime is 13853569. The reversal of 13853557 is 75535831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10201636 + 3651921 = 3194^2 + 1911^2 .

It is a cyclic number.

It is not a de Polignac number, because 13853557 - 2³ = 13853549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13853551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6926778 + 6926779.

It is an arithmetic number, because the mean of its divisors is an integer number (6926779).

Almost surely, 2^13853557 is an apocalyptic number.

It is an amenable number.

13853557 is a deficient number, since it is larger than the sum of its proper divisors (1).

13853557 is an equidigital number, since it uses as much as digits as its factorization.

13853557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63000, while the sum is 37.

The square root of 13853557 is about 3722.0366736506. The cubic root of 13853557 is about 240.1709256932.

The spelling of 13853557 in words is "thirteen million, eight hundred fifty-three thousand, five hundred fifty-seven".