91206953 has 2 divisors, whose sum is σ = 91206954. Its totient is φ = 91206952.

The previous prime is 91206917. The next prime is 91207007. The reversal of 91206953 is 35960219.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83411689 + 7795264 = 9133^2 + 2792^2 .

It is a cyclic number.

It is not a de Polignac number, because 91206953 - 2⁶ = 91206889 is a prime.

It is not a weakly prime, because it can be changed into another prime (91206253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45603476 + 45603477.

It is an arithmetic number, because the mean of its divisors is an integer number (45603477).

Almost surely, 2^91206953 is an apocalyptic number.

It is an amenable number.

91206953 is a deficient number, since it is larger than the sum of its proper divisors (1).

91206953 is an equidigital number, since it uses as much as digits as its factorization.

91206953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 91206953 is about 9550.2331385155. The cubic root of 91206953 is about 450.1348616366.

The spelling of 91206953 in words is "ninety-one million, two hundred six thousand, nine hundred fifty-three".