112621561 has 8 divisors (see below), whose sum is σ = 121372160. Its totient is φ = 103883472.

The previous prime is 112621519. The next prime is 112621567. The reversal of 112621561 is 165126211.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 112621561 - 2¹⁷ = 112490489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (112621567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25000 + ... + 29158.

It is an arithmetic number, because the mean of its divisors is an integer number (15171520).

Almost surely, 2^112621561 is an apocalyptic number.

It is an amenable number.

112621561 is a deficient number, since it is larger than the sum of its proper divisors (8750599).

112621561 is a wasteful number, since it uses less digits than its factorization.

112621561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6255.

The product of its digits is 720, while the sum is 25.

The square root of 112621561 is about 10612.3306111334. The cubic root of 112621561 is about 482.9185050547.

Adding to 112621561 its reverse (165126211), we get a palindrome (277747772).

The spelling of 112621561 in words is "one hundred twelve million, six hundred twenty-one thousand, five hundred sixty-one".