102028481 has 2 divisors, whose sum is σ = 102028482. Its totient is φ = 102028480.

The previous prime is 102028457. The next prime is 102028513. The reversal of 102028481 is 184820201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57138481 + 44890000 = 7559^2 + 6700^2 .

It is a cyclic number.

It is not a de Polignac number, because 102028481 - 2²⁶ = 34919617 is a prime.

It is a super-2 number, since 2×102028481² = 20819621870334722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102028481.

It is not a weakly prime, because it can be changed into another prime (102028411) 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, 51014240 + 51014241.

It is an arithmetic number, because the mean of its divisors is an integer number (51014241).

Almost surely, 2^102028481 is an apocalyptic number.

It is an amenable number.

102028481 is a deficient number, since it is larger than the sum of its proper divisors (1).

102028481 is an equidigital number, since it uses as much as digits as its factorization.

102028481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 102028481 is about 10100.9148595560. The cubic root of 102028481 is about 467.2763565645.

Adding to 102028481 its reverse (184820201), we get a palindrome (286848682).

The spelling of 102028481 in words is "one hundred two million, twenty-eight thousand, four hundred eighty-one".