13550406 has 16 divisors (see below), whose sum is σ = 27472944. Its totient is φ = 4454784.

The previous prime is 13550347. The next prime is 13550413. The reversal of 13550406 is 60405531.

13550406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13550406² = 367227005529672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15031 + ... + 15906.

It is an arithmetic number, because the mean of its divisors is an integer number (1717059).

Almost surely, 2^13550406 is an apocalyptic number.

13550406 is an abundant number, since it is smaller than the sum of its proper divisors (13922538).

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

13550406 is a wasteful number, since it uses less digits than its factorization.

13550406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31015.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 13550406 is about 3681.0876110193. The cubic root of 13550406 is about 238.4061398618.

Adding to 13550406 its reverse (60405531), we get a palindrome (73955937).

The spelling of 13550406 in words is "thirteen million, five hundred fifty thousand, four hundred six".