75475550 has 24 divisors (see below), whose sum is σ = 140616000. Its totient is φ = 30140480.

The previous prime is 75475549. The next prime is 75475571. The reversal of 75475550 is 5557457.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 51731 + ... + 53169.

It is an arithmetic number, because the mean of its divisors is an integer number (5859000).

Almost surely, 2^75475550 is an apocalyptic number.

75475550 is a deficient number, since it is larger than the sum of its proper divisors (65140450).

75475550 is a wasteful number, since it uses less digits than its factorization.

75475550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500 (or 2495 counting only the distinct ones).

The product of its (nonzero) digits is 122500, while the sum is 38.

The square root of 75475550 is about 8687.6665451662. Note that the first 3 decimals coincide. The cubic root of 75475550 is about 422.6057763005.

The spelling of 75475550 in words is "seventy-five million, four hundred seventy-five thousand, five hundred fifty".