1122553591 has 2 divisors, whose sum is σ = 1122553592. Its totient is φ = 1122553590.

The previous prime is 1122553517. The next prime is 1122553609. The reversal of 1122553591 is 1953552211.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1122553591 - 2⁷ = 1122553463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1122553501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561276795 + 561276796.

It is an arithmetic number, because the mean of its divisors is an integer number (561276796).

Almost surely, 2^1122553591 is an apocalyptic number.

1122553591 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122553591 is an equidigital number, since it uses as much as digits as its factorization.

1122553591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13500, while the sum is 34.

The square root of 1122553591 is about 33504.5309025511. The cubic root of 1122553591 is about 1039.2874776180.

The spelling of 1122553591 in words is "one billion, one hundred twenty-two million, five hundred fifty-three thousand, five hundred ninety-one".