45648021 has 8 divisors (see below), whose sum is σ = 60988000. Its totient is φ = 30370032.

The previous prime is 45648007. The next prime is 45648037. The reversal of 45648021 is 12084654.

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

It is not a de Polignac number, because 45648021 - 2¹¹ = 45645973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45648021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45648041) 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 7 ways as a sum of consecutive naturals, for example, 13750 + ... + 16743.

It is an arithmetic number, because the mean of its divisors is an integer number (7623500).

Almost surely, 2^45648021 is an apocalyptic number.

It is an amenable number.

45648021 is a deficient number, since it is larger than the sum of its proper divisors (15339979).

45648021 is a wasteful number, since it uses less digits than its factorization.

45648021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30995.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 45648021 is about 6756.3319190223. The cubic root of 45648021 is about 357.3885638954.

The spelling of 45648021 in words is "forty-five million, six hundred forty-eight thousand, twenty-one".