100520789 has 2 divisors, whose sum is σ = 100520790. Its totient is φ = 100520788.

The previous prime is 100520767. The next prime is 100520801. The reversal of 100520789 is 987025001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100500625 + 20164 = 10025^2 + 142^2 .

It is a cyclic number.

It is not a de Polignac number, because 100520789 - 2⁸ = 100520533 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100520729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50260394 + 50260395.

It is an arithmetic number, because the mean of its divisors is an integer number (50260395).

Almost surely, 2^100520789 is an apocalyptic number.

It is an amenable number.

100520789 is a deficient number, since it is larger than the sum of its proper divisors (1).

100520789 is an equidigital number, since it uses as much as digits as its factorization.

100520789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 100520789 is about 10026.0056353465. The cubic root of 100520789 is about 464.9632514220.

The spelling of 100520789 in words is "one hundred million, five hundred twenty thousand, seven hundred eighty-nine".