1445111 has 4 divisors (see below), whose sum is σ = 1450992. Its totient is φ = 1439232.

The previous prime is 1445107. The next prime is 1445117. The reversal of 1445111 is 1115441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1115441 = 127 ⋅8783.

It is a cyclic number.

It is not a de Polignac number, because 1445111 - 2² = 1445107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1445111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2555 + ... + 3068.

It is an arithmetic number, because the mean of its divisors is an integer number (362748).

2^1445111 is an apocalyptic number.

1445111 is a deficient number, since it is larger than the sum of its proper divisors (5881).

1445111 is an equidigital number, since it uses as much as digits as its factorization.

1445111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5880.

The product of its digits is 80, while the sum is 17.

The square root of 1445111 is about 1202.1276970439. The cubic root of 1445111 is about 113.0577666893.

The spelling of 1445111 in words is "one million, four hundred forty-five thousand, one hundred eleven".