91550153 has 2 divisors, whose sum is σ = 91550154. Its totient is φ = 91550152.

The previous prime is 91550141. The next prime is 91550159. The reversal of 91550153 is 35105519.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68095504 + 23454649 = 8252^2 + 4843^2 .

It is a cyclic number.

It is not a de Polignac number, because 91550153 - 2¹² = 91546057 is a prime.

It is not a weakly prime, because it can be changed into another prime (91550159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45775076 + 45775077.

It is an arithmetic number, because the mean of its divisors is an integer number (45775077).

Almost surely, 2^91550153 is an apocalyptic number.

It is an amenable number.

91550153 is a deficient number, since it is larger than the sum of its proper divisors (1).

91550153 is an equidigital number, since it uses as much as digits as its factorization.

91550153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3375, while the sum is 29.

The square root of 91550153 is about 9568.1844150288. The cubic root of 91550153 is about 450.6987547494.

The spelling of 91550153 in words is "ninety-one million, five hundred fifty thousand, one hundred fifty-three".