91200553 has 2 divisors, whose sum is σ = 91200554. Its totient is φ = 91200552.

The previous prime is 91200547. The next prime is 91200569. The reversal of 91200553 is 35500219.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90573289 + 627264 = 9517^2 + 792^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91200553 is a prime.

It is not a weakly prime, because it can be changed into another prime (91200503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45600276 + 45600277.

It is an arithmetic number, because the mean of its divisors is an integer number (45600277).

Almost surely, 2^91200553 is an apocalyptic number.

It is an amenable number.

91200553 is a deficient number, since it is larger than the sum of its proper divisors (1).

91200553 is an equidigital number, since it uses as much as digits as its factorization.

91200553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 91200553 is about 9549.8980622832. The cubic root of 91200553 is about 450.1243327225.

The spelling of 91200553 in words is "ninety-one million, two hundred thousand, five hundred fifty-three".