111493553 has 4 divisors (see below), whose sum is σ = 111804480. Its totient is φ = 111182628.

The previous prime is 111493549. The next prime is 111493573. The reversal of 111493553 is 355394111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 355394111 = 59 ⋅6023629.

It is a cyclic number.

It is not a de Polignac number, because 111493553 - 2² = 111493549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111493523) 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, 154925 + ... + 155642.

It is an arithmetic number, because the mean of its divisors is an integer number (27951120).

Almost surely, 2^111493553 is an apocalyptic number.

It is an amenable number.

111493553 is a deficient number, since it is larger than the sum of its proper divisors (310927).

111493553 is an equidigital number, since it uses as much as digits as its factorization.

111493553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310926.

The product of its digits is 8100, while the sum is 32.

The square root of 111493553 is about 10559.0507622608. The cubic root of 111493553 is about 481.3008017884.

The spelling of 111493553 in words is "one hundred eleven million, four hundred ninety-three thousand, five hundred fifty-three".