103521225 has 12 divisors (see below), whose sum is σ = 171155216. Its totient is φ = 55211280.

The previous prime is 103521203. The next prime is 103521233. The reversal of 103521225 is 522125301.

It is not a de Polignac number, because 103521225 - 2⁶ = 103521161 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 690067 + ... + 690216.

Almost surely, 2^103521225 is an apocalyptic number.

103521225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

103521225 is a deficient number, since it is larger than the sum of its proper divisors (67633991).

103521225 is a wasteful number, since it uses less digits than its factorization.

103521225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380296 (or 1380291 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 103521225 is about 10174.5380730528. The cubic root of 103521225 is about 469.5441861238.

Adding to 103521225 its reverse (522125301), we get a palindrome (625646526).

The spelling of 103521225 in words is "one hundred three million, five hundred twenty-one thousand, two hundred twenty-five".