4521431 has 4 divisors (see below), whose sum is σ = 4526352. Its totient is φ = 4516512.

The previous prime is 4521427. The next prime is 4521509. The reversal of 4521431 is 1341254.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1341254 = 2 ⋅670627.

It is a cyclic number.

It is not a de Polignac number, because 4521431 - 2² = 4521427 is a prime.

It is a super-3 number, since 3×4521431³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4521421) 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, 626 + ... + 3071.

It is an arithmetic number, because the mean of its divisors is an integer number (1131588).

Almost surely, 2^4521431 is an apocalyptic number.

4521431 is a deficient number, since it is larger than the sum of its proper divisors (4921).

4521431 is a wasteful number, since it uses less digits than its factorization.

4521431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4920.

The product of its digits is 480, while the sum is 20.

The square root of 4521431 is about 2126.3656788050. The cubic root of 4521431 is about 165.3580349012.

Adding to 4521431 its reverse (1341254), we get a palindrome (5862685).

The spelling of 4521431 in words is "four million, five hundred twenty-one thousand, four hundred thirty-one".