100001355 has 16 divisors (see below), whose sum is σ = 166959360. Its totient is φ = 51015008.

The previous prime is 100001347. The next prime is 100001357. The reversal of 100001355 is 553100001.

It is a cyclic number.

It is not a de Polignac number, because 100001355 - 2³ = 100001347 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

100001355 is a modest number, since divided by 1355 gives 1000 as remainder.

It is not an unprimeable number, because it can be changed into a prime (100001357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144585 + ... + 145274.

It is an arithmetic number, because the mean of its divisors is an integer number (10434960).

Almost surely, 2^100001355 is an apocalyptic number.

100001355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

100001355 is a deficient number, since it is larger than the sum of its proper divisors (66958005).

100001355 is a wasteful number, since it uses less digits than its factorization.

100001355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289890.

The product of its (nonzero) digits is 75, while the sum is 15.

The square root of 100001355 is about 10000.0677497705. The cubic root of 100001355 is about 464.1609798028.

Adding to 100001355 its reverse (553100001), we get a palindrome (653101356).

The spelling of 100001355 in words is "one hundred million, one thousand, three hundred fifty-five".