75521227 has 2 divisors, whose sum is σ = 75521228. Its totient is φ = 75521226.

The previous prime is 75521207. The next prime is 75521231. The reversal of 75521227 is 72212557.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 75521227 - 2⁷ = 75521099 is a prime.

It is not a weakly prime, because it can be changed into another prime (75521207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37760613 + 37760614.

It is an arithmetic number, because the mean of its divisors is an integer number (37760614).

Almost surely, 2^75521227 is an apocalyptic number.

75521227 is a deficient number, since it is larger than the sum of its proper divisors (1).

75521227 is an equidigital number, since it uses as much as digits as its factorization.

75521227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9800, while the sum is 31.

The square root of 75521227 is about 8690.2949892394. The cubic root of 75521227 is about 422.6910112819.

The spelling of 75521227 in words is "seventy-five million, five hundred twenty-one thousand, two hundred twenty-seven".