45840621 has 4 divisors (see below), whose sum is σ = 61120832. Its totient is φ = 30560412.

The previous prime is 45840617. The next prime is 45840629. The reversal of 45840621 is 12604854.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 45840621 - 2² = 45840617 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 (45840629) 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, 7640101 + ... + 7640106.

It is an arithmetic number, because the mean of its divisors is an integer number (15280208).

Almost surely, 2^45840621 is an apocalyptic number.

It is an amenable number.

45840621 is a deficient number, since it is larger than the sum of its proper divisors (15280211).

45840621 is a wasteful number, since it uses less digits than its factorization.

45840621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15280210.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 45840621 is about 6770.5702123233. The cubic root of 45840621 is about 357.8904947894.

The spelling of 45840621 in words is "forty-five million, eight hundred forty thousand, six hundred twenty-one".