4452921 has 48 divisors (see below), whose sum is σ = 7660800. Its totient is φ = 2550240.

The previous prime is 4452919. The next prime is 4452941. The reversal of 4452921 is 1292544.

It is not a de Polignac number, because 4452921 - 2¹ = 4452919 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

Its product of digits (2880) is a multiple of the sum of its prime divisors (90).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4452941) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 94720 + ... + 94766.

It is an arithmetic number, because the mean of its divisors is an integer number (159600).

Almost surely, 2^4452921 is an apocalyptic number.

It is an amenable number.

4452921 is a deficient number, since it is larger than the sum of its proper divisors (3207879).

4452921 is a wasteful number, since it uses less digits than its factorization.

4452921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107 (or 90 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 4452921 is about 2110.1945407948. The cubic root of 4452921 is about 164.5185968265.

The spelling of 4452921 in words is "four million, four hundred fifty-two thousand, nine hundred twenty-one".