45420745 has 8 divisors (see below), whose sum is σ = 56874816. Its totient is φ = 34756656.

The previous prime is 45420733. The next prime is 45420769. The reversal of 45420745 is 54702454.

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 45420745 - 2¹⁹ = 44896457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 197367 + ... + 197596.

It is an arithmetic number, because the mean of its divisors is an integer number (7109352).

Almost surely, 2^45420745 is an apocalyptic number.

It is an amenable number.

45420745 is a deficient number, since it is larger than the sum of its proper divisors (11454071).

45420745 is a wasteful number, since it uses less digits than its factorization.

45420745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394991.

The product of its (nonzero) digits is 22400, while the sum is 31.

The square root of 45420745 is about 6739.4914496570. The cubic root of 45420745 is about 356.7944452447.

The spelling of 45420745 in words is "forty-five million, four hundred twenty thousand, seven hundred forty-five".