111563401 has 4 divisors (see below), whose sum is σ = 118125972. Its totient is φ = 105000832.

The previous prime is 111563393. The next prime is 111563437. The reversal of 111563401 is 104365111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104365111 = 449 ⋅232439.

It can be written as a sum of positive squares in 2 ways, for example, as 74839801 + 36723600 = 8651^2 + 6060^2 .

It is a cyclic number.

It is not a de Polignac number, because 111563401 - 2³ = 111563393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111563461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3281260 + ... + 3281293.

It is an arithmetic number, because the mean of its divisors is an integer number (29531493).

Almost surely, 2^111563401 is an apocalyptic number.

It is an amenable number.

111563401 is a deficient number, since it is larger than the sum of its proper divisors (6562571).

111563401 is an equidigital number, since it uses as much as digits as its factorization.

111563401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6562570.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 111563401 is about 10562.3577386869. The cubic root of 111563401 is about 481.4012885569.

It can be divided in two parts, 1115 and 63401, that added together give a square (64516 = 254²).

The spelling of 111563401 in words is "one hundred eleven million, five hundred sixty-three thousand, four hundred one".