63105251 has 12 divisors (see below), whose sum is σ = 73017000. Its totient is φ = 54347040.

The previous prime is 63105233. The next prime is 63105253. The reversal of 63105251 is 15250136.

It is not a de Polignac number, because 63105251 - 2⁶ = 63105187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63105253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11426 + ... + 16023.

It is an arithmetic number, because the mean of its divisors is an integer number (6084750).

Almost surely, 2^63105251 is an apocalyptic number.

63105251 is a deficient number, since it is larger than the sum of its proper divisors (9911749).

63105251 is a wasteful number, since it uses less digits than its factorization.

63105251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27490 (or 27479 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 63105251 is about 7943.8813561130. The cubic root of 63105251 is about 398.1271846752.

Adding to 63105251 its reverse (15250136), we get a palindrome (78355387).

The spelling of 63105251 in words is "sixty-three million, one hundred five thousand, two hundred fifty-one".