103020503549 has 2 divisors, whose sum is σ = 103020503550. Its totient is φ = 103020503548.

The previous prime is 103020503533. The next prime is 103020503587. The reversal of 103020503549 is 945305020301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99852840025 + 3167663524 = 315995^2 + 56282^2 .

It is an emirp because it is prime and its reverse (945305020301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103020503549 - 2⁴ = 103020503533 is a prime.

It is a super-2 number, since 2×103020503549² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103020533549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51510251774 + 51510251775.

It is an arithmetic number, because the mean of its divisors is an integer number (51510251775).

Almost surely, 2^103020503549 is an apocalyptic number.

It is an amenable number.

103020503549 is a deficient number, since it is larger than the sum of its proper divisors (1).

103020503549 is an equidigital number, since it uses as much as digits as its factorization.

103020503549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 32.

The spelling of 103020503549 in words is "one hundred three billion, twenty million, five hundred three thousand, five hundred forty-nine".