91653057 has 12 divisors (see below), whose sum is σ = 133560804. Its totient is φ = 60560640.

The previous prime is 91653053. The next prime is 91653077. The reversal of 91653057 is 75035619.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 48566961 + 43086096 = 6969^2 + 6564^2 .

It is not a de Polignac number, because 91653057 - 2² = 91653053 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91653053) 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 in 11 ways as a sum of consecutive naturals, for example, 44044 + ... + 46077.

It is an arithmetic number, because the mean of its divisors is an integer number (11130067).

Almost surely, 2^91653057 is an apocalyptic number.

It is an amenable number.

91653057 is a deficient number, since it is larger than the sum of its proper divisors (41907747).

91653057 is a wasteful number, since it uses less digits than its factorization.

91653057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90240 (or 90237 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 36.

The square root of 91653057 is about 9573.5603095191. The cubic root of 91653057 is about 450.8675559917.

The spelling of 91653057 in words is "ninety-one million, six hundred fifty-three thousand, fifty-seven".