91122077 has 8 divisors (see below), whose sum is σ = 92901600. Its totient is φ = 89355024.

The previous prime is 91122071. The next prime is 91122103. The reversal of 91122077 is 77022119.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91122077 - 2¹⁸ = 90859933 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 (91122071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12374 + ... + 18312.

It is an arithmetic number, because the mean of its divisors is an integer number (11612700).

Almost surely, 2^91122077 is an apocalyptic number.

It is an amenable number.

91122077 is a deficient number, since it is larger than the sum of its proper divisors (1779523).

91122077 is a wasteful number, since it uses less digits than its factorization.

91122077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6235.

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 91122077 is about 9545.7884430779. The cubic root of 91122077 is about 449.9951884259.

The spelling of 91122077 in words is "ninety-one million, one hundred twenty-two thousand, seventy-seven".