63451 has 4 divisors (see below), whose sum is σ = 64152. Its totient is φ = 62752.

The previous prime is 63443. The next prime is 63463. The reversal of 63451 is 15436.

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.

It is a cyclic number.

It is not a de Polignac number, because 63451 - 2³ = 63443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190 + ... + 403.

It is an arithmetic number, because the mean of its divisors is an integer number (16038).

2⁶³⁴⁵¹ is an apocalyptic number.

63451 is a deficient number, since it is larger than the sum of its proper divisors (701).

63451 is a wasteful number, since it uses less digits than its factorization.

63451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700.

The product of its digits is 360, while the sum is 19.

The square root of 63451 is about 251.8948193195. The cubic root of 63451 is about 39.8852963915.

Adding to 63451 its reverse (15436), we get a palindrome (78887).

It can be divided in two parts, 6 and 3451, that multiplied together give a triangular number (20706 = T₂₀₃).

The spelling of 63451 in words is "sixty-three thousand, four hundred fifty-one".