20132451 has 12 divisors (see below), whose sum is σ = 29479528. Its totient is φ = 13237344.

The previous prime is 20132443. The next prime is 20132479. The reversal of 20132451 is 15423102.

It is not a de Polignac number, because 20132451 - 2³ = 20132443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20132401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14665 + ... + 15978.

Almost surely, 2^20132451 is an apocalyptic number.

20132451 is a deficient number, since it is larger than the sum of its proper divisors (9347077).

20132451 is a wasteful number, since it uses less digits than its factorization.

20132451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30722 (or 30719 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20132451 is about 4486.9199903720. The cubic root of 20132451 is about 272.0396559468.

Adding to 20132451 its reverse (15423102), we get a palindrome (35555553).

The spelling of 20132451 in words is "twenty million, one hundred thirty-two thousand, four hundred fifty-one".