12561010 has 48 divisors (see below), whose sum is σ = 28421568. Its totient is φ = 3912480.

The previous prime is 12561007. The next prime is 12561023. The reversal of 12561010 is 1016521.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7729 + ... + 9211.

It is an arithmetic number, because the mean of its divisors is an integer number (592116).

Almost surely, 2^12561010 is an apocalyptic number.

12561010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12561010 is an abundant number, since it is smaller than the sum of its proper divisors (15860558).

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

12561010 is a wasteful number, since it uses less digits than its factorization.

12561010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519 (or 1508 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 12561010 is about 3544.1515204630. The cubic root of 12561010 is about 232.4564068267.

Adding to 12561010 its reverse (1016521), we get a palindrome (13577531).

The spelling of 12561010 in words is "twelve million, five hundred sixty-one thousand, ten".