45421000 has 64 divisors (see below), whose sum is σ = 108416880. Its totient is φ = 17804800.

The previous prime is 45420979. The next prime is 45421007. The reversal of 45421000 is 12454.

It can be written as a sum of positive squares in 8 ways, for example, as 12404484 + 33016516 = 3522^2 + 5746^2 .

It is not an unprimeable number, because it can be changed into a prime (45421007) 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 15 ways as a sum of consecutive naturals, for example, 52572 + ... + 53428.

Almost surely, 2^45421000 is an apocalyptic number.

45421000 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 45421000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54208440).

45421000 is an abundant number, since it is smaller than the sum of its proper divisors (62995880).

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

45421000 is a wasteful number, since it uses less digits than its factorization.

45421000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931 (or 917 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 45421000 is about 6739.5103679718. The cubic root of 45421000 is about 356.7951129456.

Adding to 45421000 its reverse (12454), we get a palindrome (45433454).

The spelling of 45421000 in words is "forty-five million, four hundred twenty-one thousand".