4506721875 has 96 divisors (see below), whose sum is σ = 8619448320. Its totient is φ = 2324700000.

The previous prime is 4506721871. The next prime is 4506721889. The reversal of 4506721875 is 5781276054.

4506721875 is a `hidden beast` number, since 4 + 506 + 72 + 1 + 8 + 75 = 666.

It is not a de Polignac number, because 4506721875 - 2² = 4506721871 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 4506721875.

It is not an unprimeable number, because it can be changed into a prime (4506721871) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 2614764 + ... + 2616486.

It is an arithmetic number, because the mean of its divisors is an integer number (89785920).

Almost surely, 2^4506721875 is an apocalyptic number.

4506721875 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

4506721875 is a deficient number, since it is larger than the sum of its proper divisors (4112726445).

4506721875 is an equidigital number, since it uses as much as digits as its factorization.

4506721875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788 (or 1762 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 45.

The square root of 4506721875 is about 67132.1225271479. The cubic root of 4506721875 is about 1651.7852577828.

The spelling of 4506721875 in words is "four billion, five hundred six million, seven hundred twenty-one thousand, eight hundred seventy-five".