13125550 has 12 divisors (see below), whose sum is σ = 24413616. Its totient is φ = 5250200.

The previous prime is 13125527. The next prime is 13125551. The reversal of 13125550 is 5552131.

13125550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13125551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 131206 + ... + 131305.

It is an arithmetic number, because the mean of its divisors is an integer number (2034468).

Almost surely, 2^13125550 is an apocalyptic number.

13125550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13125550 is a deficient number, since it is larger than the sum of its proper divisors (11288066).

13125550 is a wasteful number, since it uses less digits than its factorization.

13125550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262523 (or 262518 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 13125550 is about 3622.9200929637. The cubic root of 13125550 is about 235.8879938672.

Adding to 13125550 its reverse (5552131), we get a palindrome (18677681).

The spelling of 13125550 in words is "thirteen million, one hundred twenty-five thousand, five hundred fifty".