13550550 has 48 divisors (see below), whose sum is σ = 36195600. Its totient is φ = 3335040.

The previous prime is 13550539. The next prime is 13550557. The reversal of 13550550 is 5505531.

It is a self number, because there is not a number n which added to its sum of digits gives 13550550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13550557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1525 + ... + 5424.

It is an arithmetic number, because the mean of its divisors is an integer number (754075).

Almost surely, 2^13550550 is an apocalyptic number.

13550550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13550550 is an abundant number, since it is smaller than the sum of its proper divisors (22645050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13550550 is a wasteful number, since it uses less digits than its factorization.

13550550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6977 (or 6972 counting only the distinct ones).

The product of its (nonzero) digits is 1875, while the sum is 24.

The square root of 13550550 is about 3681.1071704040. The cubic root of 13550550 is about 238.4069843719.

The spelling of 13550550 in words is "thirteen million, five hundred fifty thousand, five hundred fifty".