91719054 has 80 divisors (see below), whose sum is σ = 243064800. Its totient is φ = 25292736.

The previous prime is 91719053. The next prime is 91719059. The reversal of 91719054 is 45091719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91719053) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 31492 + ... + 34280.

It is an arithmetic number, because the mean of its divisors is an integer number (3038310).

Almost surely, 2^91719054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91719054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121532400).

91719054 is an abundant number, since it is smaller than the sum of its proper divisors (151345746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91719054 is a wasteful number, since it uses less digits than its factorization.

91719054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2839 (or 2830 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 91719054 is about 9577.0065260498. The cubic root of 91719054 is about 450.9757493889.

It can be divided in two parts, 9171 and 9054, that added together give a square (18225 = 135²).

The spelling of 91719054 in words is "ninety-one million, seven hundred nineteen thousand, fifty-four".