12520554 has 8 divisors (see below), whose sum is σ = 25041120. Its totient is φ = 4173516.

The previous prime is 12520553. The next prime is 12520597. The reversal of 12520554 is 45502521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

12520554 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12520553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1043374 + ... + 1043385.

It is an arithmetic number, because the mean of its divisors is an integer number (3130140).

Almost surely, 2^12520554 is an apocalyptic number.

12520554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12520554 is a wasteful number, since it uses less digits than its factorization.

12520554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2086764.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 12520554 is about 3538.4394865534. The cubic root of 12520554 is about 232.2065763119.

The spelling of 12520554 in words is "twelve million, five hundred twenty thousand, five hundred fifty-four".