87100001 has 4 divisors (see below), whose sum is σ = 87201792. Its totient is φ = 86998212.

The previous prime is 87099979. The next prime is 87100043. The reversal of 87100001 is 10000178.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87100001 - 2⁶ = 87099937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87100301) 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, 49601 + ... + 51326.

It is an arithmetic number, because the mean of its divisors is an integer number (21800448).

Almost surely, 2^87100001 is an apocalyptic number.

It is an amenable number.

87100001 is a deficient number, since it is larger than the sum of its proper divisors (101791).

87100001 is a wasteful number, since it uses less digits than its factorization.

87100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101790.

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 87100001 is about 9332.7381298309. The cubic root of 87100001 is about 443.2744708001.

Adding to 87100001 its reverse (10000178), we get a palindrome (97100179).

The spelling of 87100001 in words is "eighty-seven million, one hundred thousand, one".