45230021 has 4 divisors (see below), whose sum is σ = 46452492. Its totient is φ = 44007552.

The previous prime is 45229991. The next prime is 45230057. The reversal of 45230021 is 12003254.

45230021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12003254 = 2 ⋅6001627.

It can be written as a sum of positive squares in 2 ways, for example, as 33189121 + 12040900 = 5761^2 + 3470^2 .

It is a cyclic number.

It is not a de Polignac number, because 45230021 - 2⁶ = 45229957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45230321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 611180 + ... + 611253.

It is an arithmetic number, because the mean of its divisors is an integer number (11613123).

Almost surely, 2^45230021 is an apocalyptic number.

It is an amenable number.

45230021 is a deficient number, since it is larger than the sum of its proper divisors (1222471).

45230021 is a wasteful number, since it uses less digits than its factorization.

45230021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222470.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 45230021 is about 6725.3268322067. The cubic root of 45230021 is about 356.2943453159.

Adding to 45230021 its reverse (12003254), we get a palindrome (57233275).

The spelling of 45230021 in words is "forty-five million, two hundred thirty thousand, twenty-one".