1105553 has 8 divisors (see below), whose sum is σ = 1201920. Its totient is φ = 1013040.

The previous prime is 1105549. The next prime is 1105571. The reversal of 1105553 is 3555011.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1105553 - 2² = 1105549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1105513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350 + ... + 1527.

It is an arithmetic number, because the mean of its divisors is an integer number (150240).

2^1105553 is an apocalyptic number.

It is an amenable number.

1105553 is a deficient number, since it is larger than the sum of its proper divisors (96367).

1105553 is a wasteful number, since it uses less digits than its factorization.

1105553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1927.

The product of its (nonzero) digits is 375, while the sum is 20.

The square root of 1105553 is about 1051.4528044568. The cubic root of 1105553 is about 103.4014246555.

It can be divided in two parts, 1105 and 553, that multiplied together give a triangular number (611065 = T₁₁₀₅).

The spelling of 1105553 in words is "one million, one hundred five thousand, five hundred fifty-three".