225553091 has 2 divisors, whose sum is σ = 225553092. Its totient is φ = 225553090.

The previous prime is 225553063. The next prime is 225553109. The reversal of 225553091 is 190355522.

Together with next prime (225553109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225553091 is a prime.

It is not a weakly prime, because it can be changed into another prime (225553291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112776545 + 112776546.

It is an arithmetic number, because the mean of its divisors is an integer number (112776546).

Almost surely, 2^225553091 is an apocalyptic number.

225553091 is a deficient number, since it is larger than the sum of its proper divisors (1).

225553091 is an equidigital number, since it uses as much as digits as its factorization.

225553091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 225553091 is about 15018.4250505837. The cubic root of 225553091 is about 608.7181637783.

The spelling of 225553091 in words is "two hundred twenty-five million, five hundred fifty-three thousand, ninety-one".