75520000 has 120 divisors (see below), whose sum is σ = 191891700. Its totient is φ = 29696000.

The previous prime is 75519989. The next prime is 75520007. The reversal of 75520000 is 2557.

It is a happy number.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 75520000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75520007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1279971 + ... + 1280029.

Almost surely, 2^75520000 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 75520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95945850).

75520000 is an abundant number, since it is smaller than the sum of its proper divisors (116371700).

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

75520000 is an frugal number, since it uses more digits than its factorization.

75520000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 19.

The square root of 75520000 is about 8690.2243929602. The cubic root of 75520000 is about 422.6887221035.

Adding to 75520000 its reverse (2557), we get a palindrome (75522557).

The spelling of 75520000 in words is "seventy-five million, five hundred twenty thousand".