113820545 has 16 divisors (see below), whose sum is σ = 144157440. Its totient is φ = 86033664.

The previous prime is 113820541. The next prime is 113820599. The reversal of 113820545 is 545028311.

It is a cyclic number.

It is not a de Polignac number, because 113820545 - 2² = 113820541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (113820541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39752 + ... + 42518.

It is an arithmetic number, because the mean of its divisors is an integer number (9009840).

Almost surely, 2^113820545 is an apocalyptic number.

It is an amenable number.

113820545 is a deficient number, since it is larger than the sum of its proper divisors (30336895).

113820545 is a wasteful number, since it uses less digits than its factorization.

113820545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3224.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 113820545 is about 10668.6711918589. The cubic root of 113820545 is about 484.6261972541.

Adding to 113820545 its reverse (545028311), we get a palindrome (658848856).

The spelling of 113820545 in words is "one hundred thirteen million, eight hundred twenty thousand, five hundred forty-five".