90276257 has 2 divisors, whose sum is σ = 90276258. Its totient is φ = 90276256.

The previous prime is 90276233. The next prime is 90276259. The reversal of 90276257 is 75267209.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76667536 + 13608721 = 8756^2 + 3689^2 .

It is a cyclic number.

It is not a de Polignac number, because 90276257 - 2²² = 86081953 is a prime.

Together with 90276259, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90276257.

It is not a weakly prime, because it can be changed into another prime (90276259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45138128 + 45138129.

It is an arithmetic number, because the mean of its divisors is an integer number (45138129).

Almost surely, 2^90276257 is an apocalyptic number.

It is an amenable number.

90276257 is a deficient number, since it is larger than the sum of its proper divisors (1).

90276257 is an equidigital number, since it uses as much as digits as its factorization.

90276257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 90276257 is about 9501.3818468684. The cubic root of 90276257 is about 448.5985320177.

The spelling of 90276257 in words is "ninety million, two hundred seventy-six thousand, two hundred fifty-seven".