92745221 has 2 divisors, whose sum is σ = 92745222. Its totient is φ = 92745220.

The previous prime is 92745203. The next prime is 92745271. The reversal of 92745221 is 12254729.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70324996 + 22420225 = 8386^2 + 4735^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-92745221 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 (92745271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46372610 + 46372611.

It is an arithmetic number, because the mean of its divisors is an integer number (46372611).

Almost surely, 2^92745221 is an apocalyptic number.

It is an amenable number.

92745221 is a deficient number, since it is larger than the sum of its proper divisors (1).

92745221 is an equidigital number, since it uses as much as digits as its factorization.

92745221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 32.

The square root of 92745221 is about 9630.4320256155. The cubic root of 92745221 is about 452.6513779824.

The spelling of 92745221 in words is "ninety-two million, seven hundred forty-five thousand, two hundred twenty-one".