102101587 has 4 divisors (see below), whose sum is σ = 116687536. Its totient is φ = 87515640.

The previous prime is 102101581. The next prime is 102101639. The reversal of 102101587 is 785101201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 785101201 = 12343 ⋅63607.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102101587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102101581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7292964 + ... + 7292977.

It is an arithmetic number, because the mean of its divisors is an integer number (29171884).

Almost surely, 2^102101587 is an apocalyptic number.

102101587 is a deficient number, since it is larger than the sum of its proper divisors (14585949).

102101587 is an equidigital number, since it uses as much as digits as its factorization.

102101587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14585948.

The product of its (nonzero) digits is 560, while the sum is 25.

The square root of 102101587 is about 10104.5329926722. The cubic root of 102101587 is about 467.3879350481.

Adding to 102101587 its reverse (785101201), we get a palindrome (887202788).

The spelling of 102101587 in words is "one hundred two million, one hundred one thousand, five hundred eighty-seven".