45854021 has 4 divisors (see below), whose sum is σ = 45880044. Its totient is φ = 45828000.

The previous prime is 45853987. The next prime is 45854023. The reversal of 45854021 is 12045854.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12045854 = 2 ⋅6022927.

It can be written as a sum of positive squares in 2 ways, for example, as 7896100 + 37957921 = 2810^2 + 6161^2 .

It is a cyclic number.

It is not a de Polignac number, because 45854021 - 2¹⁰ = 45852997 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 (45854023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10160 + ... + 13961.

It is an arithmetic number, because the mean of its divisors is an integer number (11470011).

Almost surely, 2^45854021 is an apocalyptic number.

It is an amenable number.

45854021 is a deficient number, since it is larger than the sum of its proper divisors (26023).

45854021 is a wasteful number, since it uses less digits than its factorization.

45854021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26022.

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 45854021 is about 6771.5597169338. The cubic root of 45854021 is about 357.9253639026.

Adding to 45854021 its reverse (12045854), we get a palindrome (57899875).

The spelling of 45854021 in words is "forty-five million, eight hundred fifty-four thousand, twenty-one".