45104721 has 16 divisors (see below), whose sum is σ = 63528960. Its totient is φ = 28420560.

The previous prime is 45104711. The next prime is 45104737. The reversal of 45104721 is 12740154.

It is not a de Polignac number, because 45104721 - 2⁷ = 45104593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 45104691 and 45104700.

It is not an unprimeable number, because it can be changed into a prime (45104711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1641 + ... + 9638.

It is an arithmetic number, because the mean of its divisors is an integer number (3970560).

Almost surely, 2^45104721 is an apocalyptic number.

It is an amenable number.

45104721 is a deficient number, since it is larger than the sum of its proper divisors (18424239).

45104721 is a wasteful number, since it uses less digits than its factorization.

45104721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11356.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 45104721 is about 6716.0048391883. The cubic root of 45104721 is about 355.9650288629.

Adding to 45104721 its reverse (12740154), we get a palindrome (57844875).

The spelling of 45104721 in words is "forty-five million, one hundred four thousand, seven hundred twenty-one".