8720502541 has 2 divisors, whose sum is σ = 8720502542. Its totient is φ = 8720502540.

The previous prime is 8720502533. The next prime is 8720502559. The reversal of 8720502541 is 1452050278.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8719637641 + 864900 = 93379^2 + 930^2 .

It is a cyclic number.

It is not a de Polignac number, because 8720502541 - 2³ = 8720502533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8720502497 and 8720502506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8720502841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4360251270 + 4360251271.

It is an arithmetic number, because the mean of its divisors is an integer number (4360251271).

Almost surely, 2^8720502541 is an apocalyptic number.

It is an amenable number.

8720502541 is a deficient number, since it is larger than the sum of its proper divisors (1).

8720502541 is an equidigital number, since it uses as much as digits as its factorization.

8720502541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 8720502541 is about 93383.6310120783. The cubic root of 8720502541 is about 2058.3244726193.

The spelling of 8720502541 in words is "eight billion, seven hundred twenty million, five hundred two thousand, five hundred forty-one".