63212251 has 2 divisors, whose sum is σ = 63212252. Its totient is φ = 63212250.

The previous prime is 63212209. The next prime is 63212291. The reversal of 63212251 is 15221236.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63212251 - 2⁹ = 63211739 is a prime.

It is not a weakly prime, because it can be changed into another prime (63212291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31606125 + 31606126.

It is an arithmetic number, because the mean of its divisors is an integer number (31606126).

Almost surely, 2^63212251 is an apocalyptic number.

63212251 is a deficient number, since it is larger than the sum of its proper divisors (1).

63212251 is an equidigital number, since it uses as much as digits as its factorization.

63212251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 22.

The square root of 63212251 is about 7950.6132467879. The cubic root of 63212251 is about 398.3520764432.

Adding to 63212251 its reverse (15221236), we get a palindrome (78433487).

The spelling of 63212251 in words is "sixty-three million, two hundred twelve thousand, two hundred fifty-one".