13550145 has 16 divisors (see below), whose sum is σ = 24777600. Its totient is φ = 6194304.

The previous prime is 13550143. The next prime is 13550153. The reversal of 13550145 is 54105531.

It is not a de Polignac number, because 13550145 - 2¹ = 13550143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13550143) 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, 64420 + ... + 64629.

It is an arithmetic number, because the mean of its divisors is an integer number (1548600).

Almost surely, 2^13550145 is an apocalyptic number.

13550145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13550145 is a deficient number, since it is larger than the sum of its proper divisors (11227455).

13550145 is a wasteful number, since it uses less digits than its factorization.

13550145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129064.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 13550145 is about 3681.0521593697. The cubic root of 13550145 is about 238.4046091721.

Adding to 13550145 its reverse (54105531), we get a palindrome (67655676).

It can be divided in two parts, 13550 and 145, that added together give a triangular number (13695 = T₁₆₅).

The spelling of 13550145 in words is "thirteen million, five hundred fifty thousand, one hundred forty-five".