63252421 has 2 divisors, whose sum is σ = 63252422. Its totient is φ = 63252420.

The previous prime is 63252401. The next prime is 63252467. The reversal of 63252421 is 12425236.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37344321 + 25908100 = 6111^2 + 5090^2 .

It is a cyclic number.

It is not a de Polignac number, because 63252421 - 2¹³ = 63244229 is a prime.

It is a super-2 number, since 2×63252421² = 8001737524722482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63252401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31626210 + 31626211.

It is an arithmetic number, because the mean of its divisors is an integer number (31626211).

Almost surely, 2^63252421 is an apocalyptic number.

It is an amenable number.

63252421 is a deficient number, since it is larger than the sum of its proper divisors (1).

63252421 is an equidigital number, since it uses as much as digits as its factorization.

63252421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 25.

The square root of 63252421 is about 7953.1390658029. The cubic root of 63252421 is about 398.4364399131.

Adding to 63252421 its reverse (12425236), we get a palindrome (75677657).

The spelling of 63252421 in words is "sixty-three million, two hundred fifty-two thousand, four hundred twenty-one".