45390645 has 16 divisors (see below), whose sum is σ = 80694720. Its totient is φ = 24208272.

The previous prime is 45390643. The next prime is 45390659. The reversal of 45390645 is 54609354.

It is a happy number.

45390645 is a `hidden beast` number, since 4 + 5 + 3 + 9 + 0 + 645 = 666.

It is not a de Polignac number, because 45390645 - 2¹ = 45390643 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45390643) 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, 167979 + ... + 168248.

It is an arithmetic number, because the mean of its divisors is an integer number (5043420).

Almost surely, 2^45390645 is an apocalyptic number.

45390645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

45390645 is a deficient number, since it is larger than the sum of its proper divisors (35304075).

45390645 is a wasteful number, since it uses less digits than its factorization.

45390645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336241 (or 336235 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 45390645 is about 6737.2579733895. The cubic root of 45390645 is about 356.7156127934.

Adding to 45390645 its reverse (54609354), we get a palindrome (99999999).

The spelling of 45390645 in words is "forty-five million, three hundred ninety thousand, six hundred forty-five".