63278101 has 2 divisors, whose sum is σ = 63278102. Its totient is φ = 63278100.

The previous prime is 63278077. The next prime is 63278107. The reversal of 63278101 is 10187236.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34398225 + 28879876 = 5865^2 + 5374^2 .

It is a cyclic number.

It is not a de Polignac number, because 63278101 - 2¹⁵ = 63245333 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 63278101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63278107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31639050 + 31639051.

It is an arithmetic number, because the mean of its divisors is an integer number (31639051).

Almost surely, 2^63278101 is an apocalyptic number.

It is an amenable number.

63278101 is a deficient number, since it is larger than the sum of its proper divisors (1).

63278101 is an equidigital number, since it uses as much as digits as its factorization.

63278101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 63278101 is about 7954.7533588415. The cubic root of 63278101 is about 398.4903533351.

The spelling of 63278101 in words is "sixty-three million, two hundred seventy-eight thousand, one hundred one".