102028547 has 2 divisors, whose sum is σ = 102028548. Its totient is φ = 102028546.

The previous prime is 102028513. The next prime is 102028559. The reversal of 102028547 is 745820201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102028547 - 2⁸ = 102028291 is a prime.

It is not a weakly prime, because it can be changed into another prime (102028847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51014273 + 51014274.

It is an arithmetic number, because the mean of its divisors is an integer number (51014274).

Almost surely, 2^102028547 is an apocalyptic number.

102028547 is a deficient number, since it is larger than the sum of its proper divisors (1).

102028547 is an equidigital number, since it uses as much as digits as its factorization.

102028547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 102028547 is about 10100.9181265863. The cubic root of 102028547 is about 467.2764573214.

Adding to 102028547 its reverse (745820201), we get a palindrome (847848748).

The spelling of 102028547 in words is "one hundred two million, twenty-eight thousand, five hundred forty-seven".