4521943 has 4 divisors (see below), whose sum is σ = 4759960. Its totient is φ = 4283928.

The previous prime is 4521929. The next prime is 4521971. The reversal of 4521943 is 3491254.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4521943 - 2²¹ = 2424791 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 (4521973) 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, 118980 + ... + 119017.

It is an arithmetic number, because the mean of its divisors is an integer number (1189990).

Almost surely, 2^4521943 is an apocalyptic number.

4521943 is a deficient number, since it is larger than the sum of its proper divisors (238017).

4521943 is a wasteful number, since it uses less digits than its factorization.

4521943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238016.

The product of its digits is 4320, while the sum is 28.

The square root of 4521943 is about 2126.4860686118. The cubic root of 4521943 is about 165.3642762968.

The spelling of 4521943 in words is "four million, five hundred twenty-one thousand, nine hundred forty-three".