12551796 has 18 divisors (see below), whose sum is σ = 31728242. Its totient is φ = 4183920.

The previous prime is 12551789. The next prime is 12551857. The reversal of 12551796 is 69715521.

12551796 is a `hidden beast` number, since 12 + 551 + 7 + 96 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9180900 + 3370896 = 3030^2 + 1836^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 348661 = 12551796 / (1 + 2 + 5 + 5 + 1 + 7 + 9 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 12551796.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 174295 + ... + 174366.

Almost surely, 2^12551796 is an apocalyptic number.

It is an amenable number.

12551796 is an abundant number, since it is smaller than the sum of its proper divisors (19176446).

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

12551796 is a wasteful number, since it uses less digits than its factorization.

12551796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348671 (or 348666 counting only the distinct ones).

The product of its digits is 18900, while the sum is 36.

The square root of 12551796 is about 3542.8513940046. The cubic root of 12551796 is about 232.3995542525.

The spelling of 12551796 in words is "twelve million, five hundred fifty-one thousand, seven hundred ninety-six".