45057540 has 96 divisors (see below), whose sum is σ = 138692736. Its totient is φ = 10839040.

The previous prime is 45057521. The next prime is 45057553. The reversal of 45057540 is 4575054.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 45057498 and 45057507.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 153634 + ... + 153926.

It is an arithmetic number, because the mean of its divisors is an integer number (1444716).

Almost surely, 2^45057540 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 45057540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69346368).

45057540 is an abundant number, since it is smaller than the sum of its proper divisors (93635196).

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

45057540 is a wasteful number, since it uses less digits than its factorization.

45057540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549 (or 547 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 30.

The square root of 45057540 is about 6712.4913407765. The cubic root of 45057540 is about 355.8408685753.

The spelling of 45057540 in words is "forty-five million, fifty-seven thousand, five hundred forty".