1445552111 has 4 divisors (see below), whose sum is σ = 1447146792. Its totient is φ = 1443957432.

The previous prime is 1445552099. The next prime is 1445552123. The reversal of 1445552111 is 1112555441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1112555441 = 10061 ⋅110581.

It is an interprime number because it is at equal distance from previous prime (1445552099) and next prime (1445552123).

It is a cyclic number.

It is not a de Polignac number, because 1445552111 - 2³⁰ = 371810287 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 (1445558111) 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, 795980 + ... + 797793.

It is an arithmetic number, because the mean of its divisors is an integer number (361786698).

Almost surely, 2^1445552111 is an apocalyptic number.

1445552111 is a deficient number, since it is larger than the sum of its proper divisors (1594681).

1445552111 is an equidigital number, since it uses as much as digits as its factorization.

1445552111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1594680.

The product of its digits is 4000, while the sum is 29.

The square root of 1445552111 is about 38020.4170282231. The cubic root of 1445552111 is about 1130.6926890866.

It can be divided in two parts, 14455 and 52111, that added together give a palindrome (66566).

The spelling of 1445552111 in words is "one billion, four hundred forty-five million, five hundred fifty-two thousand, one hundred eleven".