13451021 has 8 divisors (see below), whose sum is σ = 14235264. Its totient is φ = 12683440.

The previous prime is 13451003. The next prime is 13451033. The reversal of 13451021 is 12015431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13451021 - 2¹⁴ = 13434637 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 (13451051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2486 + ... + 5751.

It is an arithmetic number, because the mean of its divisors is an integer number (1779408).

Almost surely, 2^13451021 is an apocalyptic number.

It is an amenable number.

13451021 is a deficient number, since it is larger than the sum of its proper divisors (784243).

13451021 is an equidigital number, since it uses as much as digits as its factorization.

13451021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8331.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 13451021 is about 3667.5633600526. The cubic root of 13451021 is about 237.8218484143.

Adding to 13451021 its reverse (12015431), we get a palindrome (25466452).

The spelling of 13451021 in words is "thirteen million, four hundred fifty-one thousand, twenty-one".