111404553 has 32 divisors (see below), whose sum is σ = 170989056. Its totient is φ = 63909888.

The previous prime is 111404551. The next prime is 111404603. The reversal of 111404553 is 355404111.

It is a happy number.

It is not a de Polignac number, because 111404553 - 2¹ = 111404551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111404551) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 74176 + ... + 75662.

It is an arithmetic number, because the mean of its divisors is an integer number (5343408).

Almost surely, 2^111404553 is an apocalyptic number.

111404553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

111404553 is a deficient number, since it is larger than the sum of its proper divisors (59584503).

111404553 is a wasteful number, since it uses less digits than its factorization.

111404553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1633.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 111404553 is about 10554.8355269042. The cubic root of 111404553 is about 481.1727011847.

Adding to 111404553 its reverse (355404111), we get a palindrome (466808664).

The spelling of 111404553 in words is "one hundred eleven million, four hundred four thousand, five hundred fifty-three".