945021 has 16 divisors (see below), whose sum is σ = 1571328. Its totient is φ = 490800.

The previous prime is 944987. The next prime is 945031. The reversal of 945021 is 120549.

It is not a de Polignac number, because 945021 - 2⁷ = 944893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 945021.

It is not an unprimeable number, because it can be changed into a prime (945031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1815 + ... + 2276.

It is an arithmetic number, because the mean of its divisors is an integer number (98208).

2⁹⁴⁵⁰²¹ is an apocalyptic number.

It is an amenable number.

945021 is a deficient number, since it is larger than the sum of its proper divisors (626307).

945021 is a wasteful number, since it uses less digits than its factorization.

945021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4112.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 945021 is about 972.1219059357. The cubic root of 945021 is about 98.1327162039.

It can be divided in two parts, 94 and 5021, that added together give a palindrome (5115).

The spelling of 945021 in words is "nine hundred forty-five thousand, twenty-one".