103516021 has 16 divisors (see below), whose sum is σ = 121701888. Its totient is φ = 86198400.

The previous prime is 103516013. The next prime is 103516027. The reversal of 103516021 is 120615301.

It is not a de Polignac number, because 103516021 - 2³ = 103516013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 103516021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103516027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83476 + ... + 84706.

It is an arithmetic number, because the mean of its divisors is an integer number (7606368).

Almost surely, 2^103516021 is an apocalyptic number.

It is an amenable number.

103516021 is a deficient number, since it is larger than the sum of its proper divisors (18185867).

103516021 is a wasteful number, since it uses less digits than its factorization.

103516021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 103516021 is about 10174.2823334130. The cubic root of 103516021 is about 469.5363180146.

The spelling of 103516021 in words is "one hundred three million, five hundred sixteen thousand, twenty-one".