113721445 has 8 divisors (see below), whose sum is σ = 138502944. Its totient is φ = 89619024.

The previous prime is 113721437. The next prime is 113721469. The reversal of 113721445 is 544127311.

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 113721445 - 2³ = 113721437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169399 + ... + 170068.

It is an arithmetic number, because the mean of its divisors is an integer number (17312868).

Almost surely, 2^113721445 is an apocalyptic number.

It is an amenable number.

113721445 is a deficient number, since it is larger than the sum of its proper divisors (24781499).

113721445 is an equidigital number, since it uses as much as digits as its factorization.

113721445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339539.

The product of its digits is 3360, while the sum is 28.

The square root of 113721445 is about 10664.0257407791. The cubic root of 113721445 is about 484.4855067742.

Adding to 113721445 its reverse (544127311), we get a palindrome (657848756).

The spelling of 113721445 in words is "one hundred thirteen million, seven hundred twenty-one thousand, four hundred forty-five".