52778867101 has 2 divisors, whose sum is σ = 52778867102. Its totient is φ = 52778867100.

The previous prime is 52778867087. The next prime is 52778867117. The reversal of 52778867101 is 10176887725.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51562601476 + 1216265625 = 227074^2 + 34875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52778867101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52778867171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26389433550 + 26389433551.

It is an arithmetic number, because the mean of its divisors is an integer number (26389433551).

Almost surely, 2^52778867101 is an apocalyptic number.

It is an amenable number.

52778867101 is a deficient number, since it is larger than the sum of its proper divisors (1).

52778867101 is an equidigital number, since it uses as much as digits as its factorization.

52778867101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1317120, while the sum is 52.

The spelling of 52778867101 in words is "fifty-two billion, seven hundred seventy-eight million, eight hundred sixty-seven thousand, one hundred one".