91859055 has 8 divisors (see below), whose sum is σ = 146974512. Its totient is φ = 48991488.

The previous prime is 91859023. The next prime is 91859057. The reversal of 91859055 is 55095819.

It is a happy number.

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

It is not a de Polignac number, because 91859055 - 2⁵ = 91859023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91858998 and 91859016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91859057) 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, 3061954 + ... + 3061983.

It is an arithmetic number, because the mean of its divisors is an integer number (18371814).

Almost surely, 2^91859055 is an apocalyptic number.

91859055 is a deficient number, since it is larger than the sum of its proper divisors (55115457).

91859055 is a wasteful number, since it uses less digits than its factorization.

91859055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6123945.

The product of its (nonzero) digits is 81000, while the sum is 42.

The square root of 91859055 is about 9584.3129644226. The cubic root of 91859055 is about 451.2050908978.

The spelling of 91859055 in words is "ninety-one million, eight hundred fifty-nine thousand, fifty-five".