91645050 has 48 divisors (see below), whose sum is σ = 259751232. Its totient is φ = 20947200.

The previous prime is 91645049. The next prime is 91645051. The reversal of 91645050 is 5054619.

It is an interprime number because it is at equal distance from previous prime (91645049) and next prime (91645051).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 91644999 and 91645017.

It is not an unprimeable number, because it can be changed into a prime (91645051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42591 + ... + 44690.

It is an arithmetic number, because the mean of its divisors is an integer number (5411484).

Almost surely, 2^91645050 is an apocalyptic number.

91645050 is an abundant number, since it is smaller than the sum of its proper divisors (168106182).

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

91645050 is a wasteful number, since it uses less digits than its factorization.

91645050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87303 (or 87298 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 91645050 is about 9573.1421174033. The cubic root of 91645050 is about 450.8544260363.

Adding to 91645050 its reverse (5054619), we get a palindrome (96699669).

The spelling of 91645050 in words is "ninety-one million, six hundred forty-five thousand, fifty".