45171450 has 72 divisors (see below), whose sum is σ = 124686588. Its totient is φ = 11715840.

The previous prime is 45171449. The next prime is 45171479. The reversal of 45171450 is 5417154.

It is a happy number.

45171450 is a `hidden beast` number, since 4 + 517 + 145 + 0 = 666.

45171450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 39425841 + 5745609 = 6279^2 + 2397^2 .

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 35 ways as a sum of consecutive naturals, for example, 15294 + ... + 18006.

Almost surely, 2^45171450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45171450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62343294).

45171450 is an abundant number, since it is smaller than the sum of its proper divisors (79515138).

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

45171450 is a wasteful number, since it uses less digits than its factorization.

45171450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2768 (or 2760 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 45171450 is about 6720.9709120037. The cubic root of 45171450 is about 356.1404834186.

The spelling of 45171450 in words is "forty-five million, one hundred seventy-one thousand, four hundred fifty".