90610243 has 2 divisors, whose sum is σ = 90610244. Its totient is φ = 90610242.

The previous prime is 90610213. The next prime is 90610249. The reversal of 90610243 is 34201609.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90610243 - 2²⁵ = 57055811 is a prime.

It is a super-2 number, since 2×90610243² = 16420432273038098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90610249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45305121 + 45305122.

It is an arithmetic number, because the mean of its divisors is an integer number (45305122).

Almost surely, 2^90610243 is an apocalyptic number.

90610243 is a deficient number, since it is larger than the sum of its proper divisors (1).

90610243 is an equidigital number, since it uses as much as digits as its factorization.

90610243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 90610243 is about 9518.9412751629. The cubic root of 90610243 is about 449.1510628387.

The spelling of 90610243 in words is "ninety million, six hundred ten thousand, two hundred forty-three".