13555057 has 4 divisors (see below), whose sum is σ = 13726720. Its totient is φ = 13383396.

The previous prime is 13555043. The next prime is 13555067. The reversal of 13555057 is 75055531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75055531 = 173 ⋅433847.

It is a cyclic number.

It is not a de Polignac number, because 13555057 - 2⁷ = 13554929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13555067) 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, 85713 + ... + 85870.

It is an arithmetic number, because the mean of its divisors is an integer number (3431680).

Almost surely, 2^13555057 is an apocalyptic number.

It is an amenable number.

13555057 is a deficient number, since it is larger than the sum of its proper divisors (171663).

13555057 is an equidigital number, since it uses as much as digits as its factorization.

13555057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171662.

The product of its (nonzero) digits is 13125, while the sum is 31.

The square root of 13555057 is about 3681.7192994578. The cubic root of 13555057 is about 238.4334133403.

The spelling of 13555057 in words is "thirteen million, five hundred fifty-five thousand, fifty-seven".