91006037 has 2 divisors, whose sum is σ = 91006038. Its totient is φ = 91006036.

The previous prime is 91006021. The next prime is 91006057. The reversal of 91006037 is 73060019.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65189476 + 25816561 = 8074^2 + 5081^2 .

It is a cyclic number.

It is not a de Polignac number, because 91006037 - 2⁴ = 91006021 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 91005997 and 91006015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91006007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45503018 + 45503019.

It is an arithmetic number, because the mean of its divisors is an integer number (45503019).

Almost surely, 2^91006037 is an apocalyptic number.

It is an amenable number.

91006037 is a deficient number, since it is larger than the sum of its proper divisors (1).

91006037 is an equidigital number, since it uses as much as digits as its factorization.

91006037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 91006037 is about 9539.7084336996. The cubic root of 91006037 is about 449.8040908543.

The spelling of 91006037 in words is "ninety-one million, six thousand, thirty-seven".