45041921 has 8 divisors (see below), whose sum is σ = 45700200. Its totient is φ = 44387200.

The previous prime is 45041917. The next prime is 45041923. The reversal of 45041921 is 12914054.

It can be written as a sum of positive squares in 4 ways, for example, as 3568321 + 41473600 = 1889^2 + 6440^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45041921 - 2² = 45041917 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 (45041923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33971 + ... + 35271.

It is an arithmetic number, because the mean of its divisors is an integer number (5712525).

Almost surely, 2^45041921 is an apocalyptic number.

It is an amenable number.

45041921 is a deficient number, since it is larger than the sum of its proper divisors (658279).

45041921 is a wasteful number, since it uses less digits than its factorization.

45041921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 45041921 is about 6711.3278119907. The cubic root of 45041921 is about 355.7997469276.

Adding to 45041921 its reverse (12914054), we get a palindrome (57955975).

The spelling of 45041921 in words is "forty-five million, forty-one thousand, nine hundred twenty-one".