2145111 has 8 divisors (see below), whose sum is σ = 3028464. Its totient is φ = 1345920.

The previous prime is 2145109. The next prime is 2145113. The reversal of 2145111 is 1115412.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2145109) and next prime (2145113).

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

It is not a de Polignac number, because 2145111 - 2¹ = 2145109 is a prime.

2145111 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145113) 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, 20980 + ... + 21081.

It is an arithmetic number, because the mean of its divisors is an integer number (378558).

2^2145111 is an apocalyptic number.

2145111 is a deficient number, since it is larger than the sum of its proper divisors (883353).

2145111 is a wasteful number, since it uses less digits than its factorization.

2145111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42081.

The product of its digits is 40, while the sum is 15.

The square root of 2145111 is about 1464.6197458726. The cubic root of 2145111 is about 128.9683835744.

The spelling of 2145111 in words is "two million, one hundred forty-five thousand, one hundred eleven".