45409745 has 4 divisors (see below), whose sum is σ = 54491700. Its totient is φ = 36327792.

The previous prime is 45409717. The next prime is 45409759. The reversal of 45409745 is 54790454.

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 12588304 + 32821441 = 3548^2 + 5729^2 .

It is a cyclic number.

It is not a de Polignac number, because 45409745 - 2⁸ = 45409489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 45409699 and 45409708.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4540970 + ... + 4540979.

It is an arithmetic number, because the mean of its divisors is an integer number (13622925).

Almost surely, 2^45409745 is an apocalyptic number.

It is an amenable number.

45409745 is a deficient number, since it is larger than the sum of its proper divisors (9081955).

45409745 is an equidigital number, since it uses as much as digits as its factorization.

45409745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9081954.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 45409745 is about 6738.6753149265. The cubic root of 45409745 is about 356.7656400826.

The spelling of 45409745 in words is "forty-five million, four hundred nine thousand, seven hundred forty-five".