45557538 has 64 divisors (see below), whose sum is σ = 102961152. Its totient is φ = 13343040.

The previous prime is 45557537. The next prime is 45557543. The reversal of 45557538 is 83575554.

45557538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 45557538.

It is not an unprimeable number, because it can be changed into a prime (45557537) 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 31 ways as a sum of consecutive naturals, for example, 200581 + ... + 200807.

It is an arithmetic number, because the mean of its divisors is an integer number (1608768).

Almost surely, 2^45557538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45557538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51480576).

45557538 is an abundant number, since it is smaller than the sum of its proper divisors (57403614).

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

45557538 is a wasteful number, since it uses less digits than its factorization.

45557538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359.

The product of its digits is 420000, while the sum is 42.

The square root of 45557538 is about 6749.6324344367. The cubic root of 45557538 is about 357.1522704871.

The spelling of 45557538 in words is "forty-five million, five hundred fifty-seven thousand, five hundred thirty-eight".