103001621 has 4 divisors (see below), whose sum is σ = 103946700. Its totient is φ = 102056544.

The previous prime is 103001609. The next prime is 103001627. The reversal of 103001621 is 126100301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57168721 + 45832900 = 7561^2 + 6770^2 .

It is a cyclic number.

It is not a de Polignac number, because 103001621 - 2⁶ = 103001557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103001596 and 103001605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103001627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472376 + ... + 472593.

It is an arithmetic number, because the mean of its divisors is an integer number (25986675).

Almost surely, 2^103001621 is an apocalyptic number.

It is an amenable number.

103001621 is a deficient number, since it is larger than the sum of its proper divisors (945079).

103001621 is an equidigital number, since it uses as much as digits as its factorization.

103001621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945078.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 103001621 is about 10148.9714257160. The cubic root of 103001621 is about 468.7572738190.

Adding to 103001621 its reverse (126100301), we get a palindrome (229101922).

The spelling of 103001621 in words is "one hundred three million, one thousand, six hundred twenty-one".