45172005 has 32 divisors (see below), whose sum is σ = 74784000. Its totient is φ = 23265792.

The previous prime is 45171983. The next prime is 45172013. The reversal of 45172005 is 50027154.

It is not a de Polignac number, because 45172005 - 2¹³ = 45163813 is a prime.

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 110241 + ... + 110649.

It is an arithmetic number, because the mean of its divisors is an integer number (2337000).

Almost surely, 2^45172005 is an apocalyptic number.

It is an amenable number.

45172005 is a deficient number, since it is larger than the sum of its proper divisors (29611995).

45172005 is a wasteful number, since it uses less digits than its factorization.

45172005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 45172005 is about 6721.0122005543. The cubic root of 45172005 is about 356.1419419885.

Adding to 45172005 its reverse (50027154), we get a palindrome (95199159).

The spelling of 45172005 in words is "forty-five million, one hundred seventy-two thousand, five".