102587081 has 2 divisors, whose sum is σ = 102587082. Its totient is φ = 102587080.

The previous prime is 102587077. The next prime is 102587083. The reversal of 102587081 is 180785201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98823481 + 3763600 = 9941^2 + 1940^2 .

It is a cyclic number.

It is not a de Polignac number, because 102587081 - 2² = 102587077 is a prime.

It is a super-2 number, since 2×102587081² = 21048218376201122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 102587083, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (102587083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51293540 + 51293541.

It is an arithmetic number, because the mean of its divisors is an integer number (51293541).

Almost surely, 2^102587081 is an apocalyptic number.

It is an amenable number.

102587081 is a deficient number, since it is larger than the sum of its proper divisors (1).

102587081 is an equidigital number, since it uses as much as digits as its factorization.

102587081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 102587081 is about 10128.5280766753. The cubic root of 102587081 is about 468.1275752843.

The spelling of 102587081 in words is "one hundred two million, five hundred eighty-seven thousand, eighty-one".