1445021 has 4 divisors (see below), whose sum is σ = 1507872. Its totient is φ = 1382172.

The previous prime is 1444999. The next prime is 1445033. The reversal of 1445021 is 1205441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1205441 = 41 ⋅29401.

It is a cyclic number.

It is not a de Polignac number, because 1445021 - 2⁶ = 1444957 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 (1445071) 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, 31391 + ... + 31436.

It is an arithmetic number, because the mean of its divisors is an integer number (376968).

2^1445021 is an apocalyptic number.

It is an amenable number.

1445021 is a deficient number, since it is larger than the sum of its proper divisors (62851).

1445021 is an equidigital number, since it uses as much as digits as its factorization.

1445021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62850.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 1445021 is about 1202.0902628339. The cubic root of 1445021 is about 113.0554196008.

The spelling of 1445021 in words is "one million, four hundred forty-five thousand, twenty-one".