45273021 has 8 divisors (see below), whose sum is σ = 60455904. Its totient is φ = 30136080.

The previous prime is 45273017. The next prime is 45273037. The reversal of 45273021 is 12037254.

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

It is not a de Polignac number, because 45273021 - 2² = 45273017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 45272982 and 45273000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45273421) 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 7 ways as a sum of consecutive naturals, for example, 9115 + ... + 13176.

It is an arithmetic number, because the mean of its divisors is an integer number (7556988).

Almost surely, 2^45273021 is an apocalyptic number.

It is an amenable number.

45273021 is a deficient number, since it is larger than the sum of its proper divisors (15182883).

45273021 is a wasteful number, since it uses less digits than its factorization.

45273021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22971.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 45273021 is about 6728.5229434104. The cubic root of 45273021 is about 356.4072187569.

The spelling of 45273021 in words is "forty-five million, two hundred seventy-three thousand, twenty-one".