91425216 has 56 divisors (see below), whose sum is σ = 244439440. Its totient is φ = 30154752.

The previous prime is 91425211. The next prime is 91425241. The reversal of 91425216 is 61252419.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91425211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16170 + ... + 21078.

It is an arithmetic number, because the mean of its divisors is an integer number (4364990).

Almost surely, 2^91425216 is an apocalyptic number.

91425216 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91425216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122219720).

91425216 is an abundant number, since it is smaller than the sum of its proper divisors (153014224).

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

91425216 is a wasteful number, since it uses less digits than its factorization.

91425216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5021 (or 5011 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 91425216 is about 9561.6534135054. The cubic root of 91425216 is about 450.4936410037.

The spelling of 91425216 in words is "ninety-one million, four hundred twenty-five thousand, two hundred sixteen".