103516621 has 24 divisors (see below), whose sum is σ = 120687840. Its totient is φ = 88219392.

The previous prime is 103516613. The next prime is 103516643. The reversal of 103516621 is 126615301.

It is not a de Polignac number, because 103516621 - 2³ = 103516613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103516601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 221430 + ... + 221896.

It is an arithmetic number, because the mean of its divisors is an integer number (5028660).

Almost surely, 2^103516621 is an apocalyptic number.

It is an amenable number.

103516621 is a deficient number, since it is larger than the sum of its proper divisors (17171219).

103516621 is a wasteful number, since it uses less digits than its factorization.

103516621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573 (or 556 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 103516621 is about 10174.3118194795. The cubic root of 103516621 is about 469.5372251890.

The spelling of 103516621 in words is "one hundred three million, five hundred sixteen thousand, six hundred twenty-one".