45045045 has 16 divisors (see below), whose sum is σ = 80080320. Its totient is φ = 24023952.

The previous prime is 45045041. The next prime is 45045073. The reversal of 45045045 is 54054054.

It is not a de Polignac number, because 45045045 - 2² = 45045041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

45045045 is a modest number, since divided by 45045 gives 45 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45045041) 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, 166699 + ... + 166968.

It is an arithmetic number, because the mean of its divisors is an integer number (5005020).

Almost surely, 2^45045045 is an apocalyptic number.

45045045 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

45045045 is a deficient number, since it is larger than the sum of its proper divisors (35035275).

45045045 is a wasteful number, since it uses less digits than its factorization.

45045045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333681 (or 333675 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 45045045 is about 6711.5605487845. The cubic root of 45045045 is about 355.8079725442.

Adding to 45045045 its reverse (54054054), we get a palindrome (99099099).

Subtracting 45045045 from its reverse (54054054), we obtain a palindrome (9009009).

The spelling of 45045045 in words is "forty-five million, forty-five thousand, forty-five".