4521867 has 24 divisors (see below), whose sum is σ = 7387200. Its totient is φ = 2446416.

The previous prime is 4521863. The next prime is 4521889. The reversal of 4521867 is 7681254.

It is not a de Polignac number, because 4521867 - 2² = 4521863 is a prime.

4521867 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4521863) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1984 + ... + 3602.

It is an arithmetic number, because the mean of its divisors is an integer number (307800).

Almost surely, 2^4521867 is an apocalyptic number.

4521867 is a deficient number, since it is larger than the sum of its proper divisors (2865333).

4521867 is a wasteful number, since it uses less digits than its factorization.

4521867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655 (or 1648 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 4521867 is about 2126.4681986806. The cubic root of 4521867 is about 165.3633498694.

It can be divided in two parts, 45 and 21867, that added together give a palindrome (21912).

The spelling of 4521867 in words is "four million, five hundred twenty-one thousand, eight hundred sixty-seven".