1101145 has 16 divisors (see below), whose sum is σ = 1419840. Its totient is φ = 817344.

The previous prime is 1101143. The next prime is 1101169. The reversal of 1101145 is 5411011.

It is a 3-Lehmer number, since φ(1101145) divides (1101145-1)³.

It is a cyclic number.

It is not a de Polignac number, because 1101145 - 2¹ = 1101143 is a prime.

It is a super-2 number, since 2×1101145² = 2425040622050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6279 + ... + 6451.

It is an arithmetic number, because the mean of its divisors is an integer number (88740).

2^1101145 is an apocalyptic number.

It is an amenable number.

1101145 is a deficient number, since it is larger than the sum of its proper divisors (318695).

1101145 is a wasteful number, since it uses less digits than its factorization.

1101145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264.

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 1101145 is about 1049.3545635294. The cubic root of 1101145 is about 103.2638161173.

Adding to 1101145 its reverse (5411011), we get a palindrome (6512156).

The spelling of 1101145 in words is "one million, one hundred one thousand, one hundred forty-five".