4521405540 has 48 divisors (see below), whose sum is σ = 12686446080. Its totient is φ = 1203183360.

The previous prime is 4521405529. The next prime is 4521405557. The reversal of 4521405540 is 455041254.

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

It is a junction number, because it is equal to n+sod(n) for n = 4521405498 and 4521405507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49921 + ... + 107400.

It is an arithmetic number, because the mean of its divisors is an integer number (264300960).

Almost surely, 2^4521405540 is an apocalyptic number.

It is an amenable number.

4521405540 is an abundant number, since it is smaller than the sum of its proper divisors (8165040540).

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

4521405540 is a wasteful number, since it uses less digits than its factorization.

4521405540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157812 (or 157810 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 4521405540 is about 67241.3975167084. The cubic root of 4521405540 is about 1653.5772452573.

Adding to 4521405540 its reverse (455041254), we get a palindrome (4976446794).

The spelling of 4521405540 in words is "four billion, five hundred twenty-one million, four hundred five thousand, five hundred forty".