111455641 has 6 divisors (see below), whose sum is σ = 122509226. Its totient is φ = 101323200.

The previous prime is 111455573. The next prime is 111455647. The reversal of 111455641 is 146554111.

It can be written as a sum of positive squares in only one way, i.e., 88454025 + 23001616 = 9405^2 + 4796^2 .

It is not a de Polignac number, because 111455641 - 2¹⁷ = 111324569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111455647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 460440 + ... + 460681.

Almost surely, 2^111455641 is an apocalyptic number.

111455641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111455641 is a deficient number, since it is larger than the sum of its proper divisors (11053585).

111455641 is an equidigital number, since it uses as much as digits as its factorization.

111455641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921143 (or 921132 counting only the distinct ones).

The product of its digits is 2400, while the sum is 28.

The square root of 111455641 is about 10557.2553724915. The cubic root of 111455641 is about 481.2462421475.

The spelling of 111455641 in words is "one hundred eleven million, four hundred fifty-five thousand, six hundred forty-one".