75255550 has 12 divisors (see below), whose sum is σ = 139975416. Its totient is φ = 30102200.

The previous prime is 75255491. The next prime is 75255553. The reversal of 75255550 is 5555257.

It is a super-3 number, since 3×75255550³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75255553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 752506 + ... + 752605.

It is an arithmetic number, because the mean of its divisors is an integer number (11664618).

Almost surely, 2^75255550 is an apocalyptic number.

75255550 is a deficient number, since it is larger than the sum of its proper divisors (64719866).

75255550 is a wasteful number, since it uses less digits than its factorization.

75255550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505123 (or 1505118 counting only the distinct ones).

The product of its (nonzero) digits is 43750, while the sum is 34.

The square root of 75255550 is about 8674.9956772324. The cubic root of 75255550 is about 422.1947657071.

The spelling of 75255550 in words is "seventy-five million, two hundred fifty-five thousand, five hundred fifty".