45863921 has 4 divisors (see below), whose sum is σ = 46729332. Its totient is φ = 44998512.

The previous prime is 45863899. The next prime is 45863933. The reversal of 45863921 is 12936854.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 35046400 + 10817521 = 5920^2 + 3289^2 .

It is a cyclic number.

It is not a de Polignac number, because 45863921 - 2¹⁴ = 45847537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45863971) 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, 432626 + ... + 432731.

It is an arithmetic number, because the mean of its divisors is an integer number (11682333).

Almost surely, 2^45863921 is an apocalyptic number.

It is an amenable number.

45863921 is a deficient number, since it is larger than the sum of its proper divisors (865411).

45863921 is an equidigital number, since it uses as much as digits as its factorization.

45863921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865410.

The product of its digits is 51840, while the sum is 38.

The square root of 45863921 is about 6772.2906759825. The cubic root of 45863921 is about 357.9511210485.

The spelling of 45863921 in words is "forty-five million, eight hundred sixty-three thousand, nine hundred twenty-one".