63672251 has 2 divisors, whose sum is σ = 63672252. Its totient is φ = 63672250.

The previous prime is 63672209. The next prime is 63672253. The reversal of 63672251 is 15227636.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63672251 - 2⁶ = 63672187 is a prime.

Together with 63672253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (63672253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31836125 + 31836126.

It is an arithmetic number, because the mean of its divisors is an integer number (31836126).

Almost surely, 2^63672251 is an apocalyptic number.

63672251 is a deficient number, since it is larger than the sum of its proper divisors (1).

63672251 is an equidigital number, since it uses as much as digits as its factorization.

63672251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 32.

The square root of 63672251 is about 7979.4893946919. The cubic root of 63672251 is about 399.3160206807.

Adding to 63672251 its reverse (15227636), we get a palindrome (78899887).

The spelling of 63672251 in words is "sixty-three million, six hundred seventy-two thousand, two hundred fifty-one".