102788641 has 2 divisors, whose sum is σ = 102788642. Its totient is φ = 102788640.

The previous prime is 102788629. The next prime is 102788663. The reversal of 102788641 is 146887201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91872225 + 10916416 = 9585^2 + 3304^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102788641 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102788641.

It is not a weakly prime, because it can be changed into another prime (102788141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51394320 + 51394321.

It is an arithmetic number, because the mean of its divisors is an integer number (51394321).

Almost surely, 2^102788641 is an apocalyptic number.

It is an amenable number.

102788641 is a deficient number, since it is larger than the sum of its proper divisors (1).

102788641 is an equidigital number, since it uses as much as digits as its factorization.

102788641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 102788641 is about 10138.4733071602. The cubic root of 102788641 is about 468.4339623547.

The spelling of 102788641 in words is "one hundred two million, seven hundred eighty-eight thousand, six hundred forty-one".