75720550 has 24 divisors (see below), whose sum is σ = 149126616. Its totient is φ = 28506240.

The previous prime is 75720539. The next prime is 75720571. The reversal of 75720550 is 5502757.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 43692 + ... + 45391.

It is an arithmetic number, because the mean of its divisors is an integer number (6213609).

Almost surely, 2^75720550 is an apocalyptic number.

75720550 is a deficient number, since it is larger than the sum of its proper divisors (73406066).

75720550 is a wasteful number, since it uses less digits than its factorization.

75720550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89112 (or 89107 counting only the distinct ones).

The product of its (nonzero) digits is 12250, while the sum is 31.

The square root of 75720550 is about 8701.7555699985. The cubic root of 75720550 is about 423.0625537396.

The spelling of 75720550 in words is "seventy-five million, seven hundred twenty thousand, five hundred fifty".