102800001 has 4 divisors (see below), whose sum is σ = 137066672. Its totient is φ = 68533332.

The previous prime is 102799993. The next prime is 102800011. The reversal of 102800001 is 100008201.

It is a happy number.

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 not a de Polignac number, because 102800001 - 2³ = 102799993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102800001.

It is not an unprimeable number, because it can be changed into a prime (102800011) 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, 17133331 + ... + 17133336.

It is an arithmetic number, because the mean of its divisors is an integer number (34266668).

Almost surely, 2^102800001 is an apocalyptic number.

It is an amenable number.

102800001 is a deficient number, since it is larger than the sum of its proper divisors (34266671).

102800001 is an equidigital number, since it uses as much as digits as its factorization.

102800001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34266670.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 102800001 is about 10139.0335338236. The cubic root of 102800001 is about 468.4512185214.

Adding to 102800001 its reverse (100008201), we get a palindrome (202808202).

The spelling of 102800001 in words is "one hundred two million, eight hundred thousand, one".