45809621 has 16 divisors (see below), whose sum is σ = 54008640. Its totient is φ = 38305920.

The previous prime is 45809593. The next prime is 45809633. The reversal of 45809621 is 12690854.

It is a cyclic number.

It is not a de Polignac number, because 45809621 - 2⁶ = 45809557 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 (45809641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80225 + ... + 80793.

It is an arithmetic number, because the mean of its divisors is an integer number (3375540).

Almost surely, 2^45809621 is an apocalyptic number.

It is an amenable number.

45809621 is a deficient number, since it is larger than the sum of its proper divisors (8199019).

45809621 is a wasteful number, since it uses less digits than its factorization.

45809621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 45809621 is about 6768.2805054164. The cubic root of 45809621 is about 357.8098013857.

The spelling of 45809621 in words is "forty-five million, eight hundred nine thousand, six hundred twenty-one".