22555887533 has 2 divisors, whose sum is σ = 22555887534. Its totient is φ = 22555887532.

The previous prime is 22555887517. The next prime is 22555887581. The reversal of 22555887533 is 33578855522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15214482409 + 7341405124 = 123347^2 + 85682^2 .

It is a cyclic number.

It is not a de Polignac number, because 22555887533 - 2⁴ = 22555887517 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22555817533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11277943766 + 11277943767.

It is an arithmetic number, because the mean of its divisors is an integer number (11277943767).

Almost surely, 2^22555887533 is an apocalyptic number.

It is an amenable number.

22555887533 is a deficient number, since it is larger than the sum of its proper divisors (1).

22555887533 is an equidigital number, since it uses as much as digits as its factorization.

22555887533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080000, while the sum is 53.

The spelling of 22555887533 in words is "twenty-two billion, five hundred fifty-five million, eight hundred eighty-seven thousand, five hundred thirty-three".