4451 has 2 divisors, whose sum is σ = 4452. Its totient is φ = 4450.

The previous prime is 4447. The next prime is 4457. The reversal of 4451 is 1544.

Added to its reverse (1544) it gives a triangular number (5995 = T₁₀₉).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4451 - 2² = 4447 is a prime.

It is a super-2 number, since 2×4451² = 39622802, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is a plaindrome in base 12, base 14 and base 15.

It is not a weakly prime, because it can be changed into another prime (4457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2225 + 2226.

It is an arithmetic number, because the mean of its divisors is an integer number (2226).

2⁴⁴⁵¹ is an apocalyptic number.

4451 is a deficient number, since it is larger than the sum of its proper divisors (1).

4451 is an equidigital number, since it uses as much as digits as its factorization.

4451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80, while the sum is 14.

The square root of 4451 is about 66.7158152165. The cubic root of 4451 is about 16.4494935528.

Adding to 4451 its sum of digits (14), we get a triangular number (4465 = T₉₄).

Subtracting from 4451 its product of digits (80), we obtain a triangular number (4371 = T₉₃).

Adding to 4451 its reverse (1544), we get a palindrome (5995).

The spelling of 4451 in words is "four thousand, four hundred fifty-one".