2291286553 has 2 divisors, whose sum is σ = 2291286554. Its totient is φ = 2291286552.

The previous prime is 2291286523. The next prime is 2291286581. The reversal of 2291286553 is 3556821922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2291249689 + 36864 = 47867^2 + 192^2 .

It is a cyclic number.

It is not a de Polignac number, because 2291286553 - 2¹³ = 2291278361 is a prime.

It is not a weakly prime, because it can be changed into another prime (2291286523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1145643276 + 1145643277.

It is an arithmetic number, because the mean of its divisors is an integer number (1145643277).

Almost surely, 2^2291286553 is an apocalyptic number.

It is an amenable number.

2291286553 is a deficient number, since it is larger than the sum of its proper divisors (1).

2291286553 is an equidigital number, since it uses as much as digits as its factorization.

2291286553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 43.

The square root of 2291286553 is about 47867.3850654075. The cubic root of 2291286553 is about 1318.3370843005.

The spelling of 2291286553 in words is "two billion, two hundred ninety-one million, two hundred eighty-six thousand, five hundred fifty-three".