4517421 has 16 divisors (see below), whose sum is σ = 6498240. Its totient is φ = 2782080.

The previous prime is 4517419. The next prime is 4517431. The reversal of 4517421 is 1247154.

4517421 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4517421 - 2¹ = 4517419 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4517391 and 4517400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4517411) 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, 1371 + ... + 3303.

It is an arithmetic number, because the mean of its divisors is an integer number (406140).

Almost surely, 2^4517421 is an apocalyptic number.

4517421 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4517421 is a deficient number, since it is larger than the sum of its proper divisors (1980819).

4517421 is a wasteful number, since it uses less digits than its factorization.

4517421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1996.

The product of its digits is 1120, while the sum is 24.

The square root of 4517421 is about 2125.4225462246. The cubic root of 4517421 is about 165.3091357920.

The spelling of 4517421 in words is "four million, five hundred seventeen thousand, four hundred twenty-one".