88773221 has 2 divisors, whose sum is σ = 88773222. Its totient is φ = 88773220.

The previous prime is 88773211. The next prime is 88773247. The reversal of 88773221 is 12237788.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87628321 + 1144900 = 9361^2 + 1070^2 .

It is a cyclic number.

It is not a de Polignac number, because 88773221 - 2¹⁸ = 88511077 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88773211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44386610 + 44386611.

It is an arithmetic number, because the mean of its divisors is an integer number (44386611).

Almost surely, 2^88773221 is an apocalyptic number.

It is an amenable number.

88773221 is a deficient number, since it is larger than the sum of its proper divisors (1).

88773221 is an equidigital number, since it uses as much as digits as its factorization.

88773221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37632, while the sum is 38.

The square root of 88773221 is about 9421.9542028180. The cubic root of 88773221 is about 446.0949696210.

The spelling of 88773221 in words is "eighty-eight million, seven hundred seventy-three thousand, two hundred twenty-one".