91276061 has 4 divisors (see below), whose sum is σ = 92526492. Its totient is φ = 90025632.

The previous prime is 91276051. The next prime is 91276067. The reversal of 91276061 is 16067219.

It is a happy number.

91276061 is nontrivially palindromic in base 8.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60684100 + 30591961 = 7790^2 + 5531^2 .

It is a cyclic number.

It is not a de Polignac number, because 91276061 - 2¹⁴ = 91259677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91276067) 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 3 ways as a sum of consecutive naturals, for example, 625106 + ... + 625251.

It is an arithmetic number, because the mean of its divisors is an integer number (23131623).

Almost surely, 2^91276061 is an apocalyptic number.

It is an amenable number.

91276061 is a deficient number, since it is larger than the sum of its proper divisors (1250431).

91276061 is a wasteful number, since it uses less digits than its factorization.

91276061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250430.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 91276061 is about 9553.8505849736. The cubic root of 91276061 is about 450.2485228046.

The spelling of 91276061 in words is "ninety-one million, two hundred seventy-six thousand, sixty-one".