1105551 has 6 divisors (see below), whose sum is σ = 1596920. Its totient is φ = 737028.

The previous prime is 1105549. The next prime is 1105571. The reversal of 1105551 is 1555011.

1105551 is a `hidden beast` number, since 110 + 5 + 551 = 666.

It is not a de Polignac number, because 1105551 - 2¹ = 1105549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1105501) 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, 61411 + ... + 61428.

2^1105551 is an apocalyptic number.

1105551 is a deficient number, since it is larger than the sum of its proper divisors (491369).

1105551 is a wasteful number, since it uses less digits than its factorization.

1105551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122845 (or 122842 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 18.

The square root of 1105551 is about 1051.4518533913. The cubic root of 1105551 is about 103.4013623027.

The spelling of 1105551 in words is "one million, one hundred five thousand, five hundred fifty-one".