45729172 has 24 divisors (see below), whose sum is σ = 83059200. Its totient is φ = 22003296.

The previous prime is 45729169. The next prime is 45729209. The reversal of 45729172 is 27192754.

45729172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55153 + ... + 55975.

It is an arithmetic number, because the mean of its divisors is an integer number (3460800).

Almost surely, 2^45729172 is an apocalyptic number.

It is an amenable number.

45729172 is a deficient number, since it is larger than the sum of its proper divisors (37330028).

45729172 is a wasteful number, since it uses less digits than its factorization.

45729172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1335 (or 1333 counting only the distinct ones).

The product of its digits is 35280, while the sum is 37.

The square root of 45729172 is about 6762.3348038972. The cubic root of 45729172 is about 357.6002216282.

The spelling of 45729172 in words is "forty-five million, seven hundred twenty-nine thousand, one hundred seventy-two".