75852209 has 2 divisors, whose sum is σ = 75852210. Its totient is φ = 75852208.

The previous prime is 75852167. The next prime is 75852221. The reversal of 75852209 is 90225857.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74770609 + 1081600 = 8647^2 + 1040^2 .

It is a cyclic number.

It is not a de Polignac number, because 75852209 - 2¹⁶ = 75786673 is a prime.

It is a super-2 number, since 2×75852209² = 11507115220359362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75852239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37926104 + 37926105.

It is an arithmetic number, because the mean of its divisors is an integer number (37926105).

Almost surely, 2^75852209 is an apocalyptic number.

It is an amenable number.

75852209 is a deficient number, since it is larger than the sum of its proper divisors (1).

75852209 is an equidigital number, since it uses as much as digits as its factorization.

75852209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 75852209 is about 8709.3173670501. The cubic root of 75852209 is about 423.3076115702.

The spelling of 75852209 in words is "seventy-five million, eight hundred fifty-two thousand, two hundred nine".