90362257 has 2 divisors, whose sum is σ = 90362258. Its totient is φ = 90362256.

The previous prime is 90362213. The next prime is 90362263. The reversal of 90362257 is 75226309.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69239041 + 21123216 = 8321^2 + 4596^2 .

It is a cyclic number.

It is not a de Polignac number, because 90362257 - 2¹⁵ = 90329489 is a prime.

It is not a weakly prime, because it can be changed into another prime (90362287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45181128 + 45181129.

It is an arithmetic number, because the mean of its divisors is an integer number (45181129).

Almost surely, 2^90362257 is an apocalyptic number.

It is an amenable number.

90362257 is a deficient number, since it is larger than the sum of its proper divisors (1).

90362257 is an equidigital number, since it uses as much as digits as its factorization.

90362257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 90362257 is about 9505.9064270589. The cubic root of 90362257 is about 448.7409364950.

The spelling of 90362257 in words is "ninety million, three hundred sixty-two thousand, two hundred fifty-seven".