2445021540 has 144 divisors (see below), whose sum is σ = 8023998528. Its totient is φ = 599069952.

The previous prime is 2445021539. The next prime is 2445021547. The reversal of 2445021540 is 451205442.

2445021540 is a `hidden beast` number, since 2 + 4 + 4 + 502 + 154 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (2445021547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 528879 + ... + 533481.

It is an arithmetic number, because the mean of its divisors is an integer number (55722212).

Almost surely, 2^2445021540 is an apocalyptic number.

2445021540 is a gapful number since it is divisible by the number (20) 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 2445021540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4011999264).

2445021540 is an abundant number, since it is smaller than the sum of its proper divisors (5578976988).

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

2445021540 is a wasteful number, since it uses less digits than its factorization.

2445021540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4858 (or 4853 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 2445021540 is about 49447.1590690507. The cubic root of 2445021540 is about 1347.1860067899.

Adding to 2445021540 its reverse (451205442), we get a palindrome (2896226982).

The spelling of 2445021540 in words is "two billion, four hundred forty-five million, twenty-one thousand, five hundred forty".