125553091 has 2 divisors, whose sum is σ = 125553092. Its totient is φ = 125553090.

The previous prime is 125553079. The next prime is 125553133. The reversal of 125553091 is 190355521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125553091 - 2⁵ = 125553059 is a prime.

It is not a weakly prime, because it can be changed into another prime (125553011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62776545 + 62776546.

It is an arithmetic number, because the mean of its divisors is an integer number (62776546).

Almost surely, 2^125553091 is an apocalyptic number.

125553091 is a deficient number, since it is larger than the sum of its proper divisors (1).

125553091 is an equidigital number, since it uses as much as digits as its factorization.

125553091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6750, while the sum is 31.

The square root of 125553091 is about 11205.0475679490. The cubic root of 125553091 is about 500.7363696537.

The spelling of 125553091 in words is "one hundred twenty-five million, five hundred fifty-three thousand, ninety-one".