75427217 has 2 divisors, whose sum is σ = 75427218. Its totient is φ = 75427216.

The previous prime is 75427213. The next prime is 75427223. The reversal of 75427217 is 71272457.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68541841 + 6885376 = 8279^2 + 2624^2 .

It is a cyclic number.

It is not a de Polignac number, because 75427217 - 2² = 75427213 is a prime.

It is not a weakly prime, because it can be changed into another prime (75427211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37713608 + 37713609.

It is an arithmetic number, because the mean of its divisors is an integer number (37713609).

Almost surely, 2^75427217 is an apocalyptic number.

It is an amenable number.

75427217 is a deficient number, since it is larger than the sum of its proper divisors (1).

75427217 is an equidigital number, since it uses as much as digits as its factorization.

75427217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27440, while the sum is 35.

The square root of 75427217 is about 8684.8843976187. The cubic root of 75427217 is about 422.5155476696.

The spelling of 75427217 in words is "seventy-five million, four hundred twenty-seven thousand, two hundred seventeen".