45783021 has 4 divisors (see below), whose sum is σ = 61044032. Its totient is φ = 30522012.

The previous prime is 45783007. The next prime is 45783037. The reversal of 45783021 is 12038754.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 45783021 - 2¹⁰ = 45781997 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 45783021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45783061) 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 3 ways as a sum of consecutive naturals, for example, 7630501 + ... + 7630506.

It is an arithmetic number, because the mean of its divisors is an integer number (15261008).

Almost surely, 2^45783021 is an apocalyptic number.

It is an amenable number.

45783021 is a deficient number, since it is larger than the sum of its proper divisors (15261011).

45783021 is a wasteful number, since it uses less digits than its factorization.

45783021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15261010.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 45783021 is about 6766.3151714947. The cubic root of 45783021 is about 357.7405322139.

The spelling of 45783021 in words is "forty-five million, seven hundred eighty-three thousand, twenty-one".