102555647 has 2 divisors, whose sum is σ = 102555648. Its totient is φ = 102555646.

The previous prime is 102555631. The next prime is 102555653. The reversal of 102555647 is 746555201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102555647 - 2⁴ = 102555631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102555847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51277823 + 51277824.

It is an arithmetic number, because the mean of its divisors is an integer number (51277824).

Almost surely, 2^102555647 is an apocalyptic number.

102555647 is a deficient number, since it is larger than the sum of its proper divisors (1).

102555647 is an equidigital number, since it uses as much as digits as its factorization.

102555647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42000, while the sum is 35.

The square root of 102555647 is about 10126.9762022037. The cubic root of 102555647 is about 468.0797569648.

The spelling of 102555647 in words is "one hundred two million, five hundred fifty-five thousand, six hundred forty-seven".