1100455 has 8 divisors (see below), whose sum is σ = 1331712. Its totient is φ = 872928.

The previous prime is 1100447. The next prime is 1100467. The reversal of 1100455 is 5540011.

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 1100455 - 2³ = 1100447 is a prime.

It is a super-2 number, since 2×1100455² = 2422002414050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232 + ... + 1501.

It is an arithmetic number, because the mean of its divisors is an integer number (166464).

2^1100455 is an apocalyptic number.

1100455 is a deficient number, since it is larger than the sum of its proper divisors (231257).

1100455 is a wasteful number, since it uses less digits than its factorization.

1100455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1865.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 1100455 is about 1049.0257384831. The cubic root of 1100455 is about 103.2422425368.

Adding to 1100455 its reverse (5540011), we get a palindrome (6640466).

It can be divided in two parts, 1100 and 455, that multiplied together give a triangular number (500500 = T₁₀₀₀).

The spelling of 1100455 in words is "one million, one hundred thousand, four hundred fifty-five".