91045100 has 18 divisors (see below), whose sum is σ = 197568084. Its totient is φ = 36418000.

The previous prime is 91045079. The next prime is 91045103. The reversal of 91045100 is 154019.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (91045103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 455126 + ... + 455325.

Almost surely, 2^91045100 is an apocalyptic number.

It is an amenable number.

91045100 is an abundant number, since it is smaller than the sum of its proper divisors (106522984).

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

91045100 is a wasteful number, since it uses less digits than its factorization.

91045100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910465 (or 910458 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 91045100 is about 9541.7556036612. The cubic root of 91045100 is about 449.8684389071.

Adding to 91045100 its reverse (154019), we get a palindrome (91199119).

The spelling of 91045100 in words is "ninety-one million, forty-five thousand, one hundred".