45719172 has 72 divisors (see below), whose sum is σ = 121185792. Its totient is φ = 14515200.

The previous prime is 45719153. The next prime is 45719173. The reversal of 45719172 is 27191754.

It is a happy number.

45719172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (45719173) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 78948 + ... + 79524.

It is an arithmetic number, because the mean of its divisors is an integer number (1683136).

Almost surely, 2^45719172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45719172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60592896).

45719172 is an abundant number, since it is smaller than the sum of its proper divisors (75466620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45719172 is a wasteful number, since it uses less digits than its factorization.

45719172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689 (or 684 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 45719172 is about 6761.5953738744. The cubic root of 45719172 is about 357.5741532000.

The spelling of 45719172 in words is "forty-five million, seven hundred nineteen thousand, one hundred seventy-two".