45000553721 has 8 divisors (see below), whose sum is σ = 46273417344. Its totient is φ = 43736037280.

The previous prime is 45000553679. The next prime is 45000553723. The reversal of 45000553721 is 12735500054.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45000553721 - 2⁶ = 45000553657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45000553723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2075861 + ... + 2097426.

It is an arithmetic number, because the mean of its divisors is an integer number (5784177168).

Almost surely, 2^45000553721 is an apocalyptic number.

45000553721 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

45000553721 is a deficient number, since it is larger than the sum of its proper divisors (1272863623).

45000553721 is a wasteful number, since it uses less digits than its factorization.

45000553721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4173591.

The product of its (nonzero) digits is 21000, while the sum is 32.

The spelling of 45000553721 in words is "forty-five billion, five hundred fifty-three thousand, seven hundred twenty-one".