102599561 has 2 divisors, whose sum is σ = 102599562. Its totient is φ = 102599560.

The previous prime is 102599551. The next prime is 102599569. The reversal of 102599561 is 165995201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59290000 + 43309561 = 7700^2 + 6581^2 .

It is a cyclic number.

It is not a de Polignac number, because 102599561 - 2²² = 98405257 is a prime.

It is not a weakly prime, because it can be changed into another prime (102599569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51299780 + 51299781.

It is an arithmetic number, because the mean of its divisors is an integer number (51299781).

Almost surely, 2^102599561 is an apocalyptic number.

It is an amenable number.

102599561 is a deficient number, since it is larger than the sum of its proper divisors (1).

102599561 is an equidigital number, since it uses as much as digits as its factorization.

102599561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24300, while the sum is 38.

The square root of 102599561 is about 10129.1441395609. The cubic root of 102599561 is about 468.1465575161.

The spelling of 102599561 in words is "one hundred two million, five hundred ninety-nine thousand, five hundred sixty-one".