91060055 has 4 divisors (see below), whose sum is σ = 109272072. Its totient is φ = 72848040.

The previous prime is 91060049. The next prime is 91060063. The reversal of 91060055 is 55006019.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55006019 = 3631 ⋅15149.

It is a de Polignac number, because none of the positive numbers 2^k-91060055 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9106001 + ... + 9106010.

It is an arithmetic number, because the mean of its divisors is an integer number (27318018).

Almost surely, 2^91060055 is an apocalyptic number.

91060055 is a deficient number, since it is larger than the sum of its proper divisors (18212017).

91060055 is a wasteful number, since it uses less digits than its factorization.

91060055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18212016.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 91060055 is about 9542.5392323008. The cubic root of 91060055 is about 449.8930692429.

The spelling of 91060055 in words is "ninety-one million, sixty thousand, fifty-five".