3531453421 has 4 divisors (see below), whose sum is σ = 3532503772. Its totient is φ = 3530403072.

The previous prime is 3531453413. The next prime is 3531453461. The reversal of 3531453421 is 1243541353.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1243541353 = 22447 ⋅55399.

It can be written as a sum of positive squares in 2 ways, for example, as 1771231396 + 1760222025 = 42086^2 + 41955^2 .

It is a cyclic number.

It is not a de Polignac number, because 3531453421 - 2³ = 3531453413 is a prime.

It is a super-5 number, since 5×3531453421⁵ (a number of 49 digits) contains 55555 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3531453461) 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, 520116 + ... + 526861.

It is an arithmetic number, because the mean of its divisors is an integer number (883125943).

Almost surely, 2^3531453421 is an apocalyptic number.

It is an amenable number.

3531453421 is a deficient number, since it is larger than the sum of its proper divisors (1050351).

3531453421 is a wasteful number, since it uses less digits than its factorization.

3531453421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050350.

The product of its digits is 21600, while the sum is 31.

The square root of 3531453421 is about 59426.0331925327. The cubic root of 3531453421 is about 1522.8290774440.

Adding to 3531453421 its reverse (1243541353), we get a palindrome (4774994774).

The spelling of 3531453421 in words is "three billion, five hundred thirty-one million, four hundred fifty-three thousand, four hundred twenty-one".