1445887 has 2 divisors, whose sum is σ = 1445888. Its totient is φ = 1445886.

The previous prime is 1445879. The next prime is 1445921. The reversal of 1445887 is 7885441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1445887 - 2³ = 1445879 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1445827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722943 + 722944.

It is an arithmetic number, because the mean of its divisors is an integer number (722944).

2^1445887 is an apocalyptic number.

1445887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445887 is an equidigital number, since it uses as much as digits as its factorization.

1445887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35840, while the sum is 37.

The square root of 1445887 is about 1202.4504147781. The cubic root of 1445887 is about 113.0779997667.

Subtracting from 1445887 its sum of digits (37), we obtain a triangular number (1445850 = T₁₇₀₀).

It can be divided in two parts, 1445 and 887, that added together give a palindrome (2332).

The spelling of 1445887 in words is "one million, four hundred forty-five thousand, eight hundred eighty-seven".