45821143 has 4 divisors (see below), whose sum is σ = 46051600. Its totient is φ = 45590688.

The previous prime is 45821119. The next prime is 45821147. The reversal of 45821143 is 34112854.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34112854 = 2 ⋅17056427.

It is a cyclic number.

It is not a de Polignac number, because 45821143 - 2¹³ = 45812951 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 (45821147) 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, 114930 + ... + 115327.

It is an arithmetic number, because the mean of its divisors is an integer number (11512900).

Almost surely, 2^45821143 is an apocalyptic number.

45821143 is a deficient number, since it is larger than the sum of its proper divisors (230457).

45821143 is a wasteful number, since it uses less digits than its factorization.

45821143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230456.

The product of its digits is 3840, while the sum is 28.

The square root of 45821143 is about 6769.1316282076. The cubic root of 45821143 is about 357.8397975513.

Adding to 45821143 its reverse (34112854), we get a palindrome (79933997).

The spelling of 45821143 in words is "forty-five million, eight hundred twenty-one thousand, one hundred forty-three".