91604153 has 2 divisors, whose sum is σ = 91604154. Its totient is φ = 91604152.

The previous prime is 91604141. The next prime is 91604171. The reversal of 91604153 is 35140619.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69438889 + 22165264 = 8333^2 + 4708^2 .

It is a cyclic number.

It is not a de Polignac number, because 91604153 - 2⁶ = 91604089 is a prime.

It is a Chen prime.

It is equal to p_5304656 and since 91604153 and 5304656 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (91604113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45802076 + 45802077.

It is an arithmetic number, because the mean of its divisors is an integer number (45802077).

Almost surely, 2^91604153 is an apocalyptic number.

It is an amenable number.

91604153 is a deficient number, since it is larger than the sum of its proper divisors (1).

91604153 is an equidigital number, since it uses as much as digits as its factorization.

91604153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 91604153 is about 9571.0058510065. The cubic root of 91604153 is about 450.7873508118.

The spelling of 91604153 in words is "ninety-one million, six hundred four thousand, one hundred fifty-three".