45352172 has 12 divisors (see below), whose sum is σ = 82103280. Its totient is φ = 21894096.

The previous prime is 45352171. The next prime is 45352187. The reversal of 45352172 is 27125354.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (45352171) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 195368 + ... + 195599.

It is an arithmetic number, because the mean of its divisors is an integer number (6841940).

Almost surely, 2^45352172 is an apocalyptic number.

It is an amenable number.

45352172 is a deficient number, since it is larger than the sum of its proper divisors (36751108).

45352172 is a wasteful number, since it uses less digits than its factorization.

45352172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391000 (or 390998 counting only the distinct ones).

The product of its digits is 8400, while the sum is 29.

The square root of 45352172 is about 6734.4021263955. The cubic root of 45352172 is about 356.6148005441.

It can be divided in two parts, 453 and 52172, that added together give a palindrome (52625).

The spelling of 45352172 in words is "forty-five million, three hundred fifty-two thousand, one hundred seventy-two".