103551405521 has 2 divisors, whose sum is σ = 103551405522. Its totient is φ = 103551405520.

The previous prime is 103551405467. The next prime is 103551405527. The reversal of 103551405521 is 125504155301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103365465025 + 185940496 = 321505^2 + 13636^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103551405521 is a prime.

It is a super-3 number, since 3×103551405521³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (103551405527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51775702760 + 51775702761.

It is an arithmetic number, because the mean of its divisors is an integer number (51775702761).

Almost surely, 2^103551405521 is an apocalyptic number.

It is an amenable number.

103551405521 is a deficient number, since it is larger than the sum of its proper divisors (1).

103551405521 is an equidigital number, since it uses as much as digits as its factorization.

103551405521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15000, while the sum is 32.

The spelling of 103551405521 in words is "one hundred three billion, five hundred fifty-one million, four hundred five thousand, five hundred twenty-one".