108570509 has 2 divisors, whose sum is σ = 108570510. Its totient is φ = 108570508.

The previous prime is 108570487. The next prime is 108570521. The reversal of 108570509 is 905075801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108222409 + 348100 = 10403^2 + 590^2 .

It is a cyclic number.

It is not a de Polignac number, because 108570509 - 2¹² = 108566413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108570529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54285254 + 54285255.

It is an arithmetic number, because the mean of its divisors is an integer number (54285255).

Almost surely, 2^108570509 is an apocalyptic number.

It is an amenable number.

108570509 is a deficient number, since it is larger than the sum of its proper divisors (1).

108570509 is an equidigital number, since it uses as much as digits as its factorization.

108570509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 35.

The square root of 108570509 is about 10419.7173186224. The cubic root of 108570509 is about 477.0573865122.

It can be divided in two parts, 1085 and 70509, that multiplied together give a triangular number (76502265 = T₁₂₃₆₉).

The spelling of 108570509 in words is "one hundred eight million, five hundred seventy thousand, five hundred nine".