100325561 has 4 divisors (see below), whose sum is σ = 114657792. Its totient is φ = 85993332.

The previous prime is 100325557. The next prime is 100325569. The reversal of 100325561 is 165523001.

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 100325561 - 2² = 100325557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100325569) 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 3 ways as a sum of consecutive naturals, for example, 7166105 + ... + 7166118.

It is an arithmetic number, because the mean of its divisors is an integer number (28664448).

Almost surely, 2^100325561 is an apocalyptic number.

It is an amenable number.

100325561 is a deficient number, since it is larger than the sum of its proper divisors (14332231).

100325561 is an equidigital number, since it uses as much as digits as its factorization.

100325561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14332230.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 100325561 is about 10016.2648227770. The cubic root of 100325561 is about 464.6620444910.

Adding to 100325561 its reverse (165523001), we get a palindrome (265848562).

The spelling of 100325561 in words is "one hundred million, three hundred twenty-five thousand, five hundred sixty-one".