113621544 has 24 divisors (see below), whose sum is σ = 307725210. Its totient is φ = 37873824.

The previous prime is 113621531. The next prime is 113621569. The reversal of 113621544 is 445126311.

It is a happy number.

113621544 is a `hidden beast` number, since 113 + 6 + 2 + 1 + 544 = 666.

It can be written as a sum of positive squares in only one way, i.e., 85932900 + 27688644 = 9270^2 + 5262^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 788967 + ... + 789110.

Almost surely, 2^113621544 is an apocalyptic number.

It is an amenable number.

113621544 is an abundant number, since it is smaller than the sum of its proper divisors (194103666).

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

113621544 is a wasteful number, since it uses less digits than its factorization.

113621544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578089 (or 1578082 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 113621544 is about 10659.3406925569. The cubic root of 113621544 is about 484.3435963768.

Adding to 113621544 its reverse (445126311), we get a palindrome (558747855).

The spelling of 113621544 in words is "one hundred thirteen million, six hundred twenty-one thousand, five hundred forty-four".