75004540 has 48 divisors (see below), whose sum is σ = 172857888. Its totient is φ = 27166464.

The previous prime is 75004537. The next prime is 75004583. The reversal of 75004540 is 4540057.

It is a super-2 number, since 2×75004540² = 11251362041223200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11059 + ... + 16501.

It is an arithmetic number, because the mean of its divisors is an integer number (3601206).

Almost surely, 2^75004540 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 75004540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86428944).

75004540 is an abundant number, since it is smaller than the sum of its proper divisors (97853348).

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

75004540 is a wasteful number, since it uses less digits than its factorization.

75004540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5518 (or 5516 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 75004540 is about 8660.5161509000. The cubic root of 75004540 is about 421.7248417776.

Adding to 75004540 its reverse (4540057), we get a palindrome (79544597).

The spelling of 75004540 in words is "seventy-five million, four thousand, five hundred forty".