13525554 has 16 divisors (see below), whose sum is σ = 30915648. Its totient is φ = 3864432.

The previous prime is 13525553. The next prime is 13525559. The reversal of 13525554 is 45552531.

It is a happy number.

It is a super-2 number, since 2×13525554² = 365881222013832, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13525553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160977 + ... + 161060.

It is an arithmetic number, because the mean of its divisors is an integer number (1932228).

Almost surely, 2^13525554 is an apocalyptic number.

13525554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

13525554 is an abundant number, since it is smaller than the sum of its proper divisors (17390094).

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

13525554 is a wasteful number, since it uses less digits than its factorization.

13525554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322049.

The product of its digits is 15000, while the sum is 30.

The square root of 13525554 is about 3677.7104290577. The cubic root of 13525554 is about 238.2603017904.

The spelling of 13525554 in words is "thirteen million, five hundred twenty-five thousand, five hundred fifty-four".