90257227 has 2 divisors, whose sum is σ = 90257228. Its totient is φ = 90257226.

The previous prime is 90257203. The next prime is 90257257. The reversal of 90257227 is 72275209.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90257227 - 2⁷ = 90257099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90257192 and 90257201.

It is not a weakly prime, because it can be changed into another prime (90257257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45128613 + 45128614.

It is an arithmetic number, because the mean of its divisors is an integer number (45128614).

Almost surely, 2^90257227 is an apocalyptic number.

90257227 is a deficient number, since it is larger than the sum of its proper divisors (1).

90257227 is an equidigital number, since it uses as much as digits as its factorization.

90257227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 90257227 is about 9500.3803608066. The cubic root of 90257227 is about 448.5670086683.

The spelling of 90257227 in words is "ninety million, two hundred fifty-seven thousand, two hundred twenty-seven".