13775145 has 16 divisors (see below), whose sum is σ = 22800960. Its totient is φ = 7093184.

The previous prime is 13775107. The next prime is 13775147. The reversal of 13775145 is 54157731.

It is a cyclic number.

It is not a de Polignac number, because 13775145 - 2⁷ = 13775017 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13775147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15399 + ... + 16268.

It is an arithmetic number, because the mean of its divisors is an integer number (1425060).

Almost surely, 2^13775145 is an apocalyptic number.

13775145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13775145 is a deficient number, since it is larger than the sum of its proper divisors (9025815).

13775145 is a wasteful number, since it uses less digits than its factorization.

13775145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31704.

The product of its digits is 14700, while the sum is 33.

The square root of 13775145 is about 3711.4882459736. The cubic root of 13775145 is about 239.7169405925.

The spelling of 13775145 in words is "thirteen million, seven hundred seventy-five thousand, one hundred forty-five".