190527221 has 2 divisors, whose sum is σ = 190527222. Its totient is φ = 190527220.

The previous prime is 190527173. The next prime is 190527251. The reversal of 190527221 is 122725091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131928196 + 58599025 = 11486^2 + 7655^2 .

It is a cyclic number.

It is not a de Polignac number, because 190527221 - 2⁶ = 190527157 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190527251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95263610 + 95263611.

It is an arithmetic number, because the mean of its divisors is an integer number (95263611).

Almost surely, 2^190527221 is an apocalyptic number.

It is an amenable number.

190527221 is a deficient number, since it is larger than the sum of its proper divisors (1).

190527221 is an equidigital number, since it uses as much as digits as its factorization.

190527221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 190527221 is about 13803.1598194037. The cubic root of 190527221 is about 575.4209605464.

The spelling of 190527221 in words is "one hundred ninety million, five hundred twenty-seven thousand, two hundred twenty-one".