45591000 has 256 divisors, whose sum is σ = 176117760. Its totient is φ = 9561600.

The previous prime is 45590999. The next prime is 45591001. The reversal of 45591000 is 19554.

It is an interprime number because it is at equal distance from previous prime (45590999) and next prime (45591001).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45591001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 272917 + ... + 273083.

It is an arithmetic number, because the mean of its divisors is an integer number (687960).

Almost surely, 2^45591000 is an apocalyptic number.

45591000 is a gapful number since it is divisible by the number (40) 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 45591000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88058880).

45591000 is an abundant number, since it is smaller than the sum of its proper divisors (130526760).

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

45591000 is a wasteful number, since it uses less digits than its factorization.

45591000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 45591000 is about 6752.1107810817. The cubic root of 45591000 is about 357.2396918374.

The spelling of 45591000 in words is "forty-five million, five hundred ninety-one thousand".