45421023 has 4 divisors (see below), whose sum is σ = 60561368. Its totient is φ = 30280680.

The previous prime is 45421009. The next prime is 45421031. The reversal of 45421023 is 32012454.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 45421023 - 2⁴ = 45421007 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 (45421073) 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, 7570168 + ... + 7570173.

It is an arithmetic number, because the mean of its divisors is an integer number (15140342).

Almost surely, 2^45421023 is an apocalyptic number.

45421023 is a deficient number, since it is larger than the sum of its proper divisors (15140345).

45421023 is a wasteful number, since it uses less digits than its factorization.

45421023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15140344.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 45421023 is about 6739.5120743270. The cubic root of 45421023 is about 356.7951731695.

Adding to 45421023 its reverse (32012454), we get a palindrome (77433477).

It can be divided in two parts, 4542 and 1023, that added together give a triangular number (5565 = T₁₀₅).

The spelling of 45421023 in words is "forty-five million, four hundred twenty-one thousand, twenty-three".