75575555 has 8 divisors (see below), whose sum is σ = 98935344. Its totient is φ = 54964000.

The previous prime is 75575543. The next prime is 75575581. The reversal of 75575555 is 55557557.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 75575555 - 2⁸ = 75575299 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 686996 + ... + 687105.

It is an arithmetic number, because the mean of its divisors is an integer number (12366918).

Almost surely, 2^75575555 is an apocalyptic number.

75575555 is a deficient number, since it is larger than the sum of its proper divisors (23359789).

75575555 is a wasteful number, since it uses less digits than its factorization.

75575555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374117.

The product of its digits is 765625, while the sum is 44.

The square root of 75575555 is about 8693.4202130117. The cubic root of 75575555 is about 422.7923446147.

The spelling of 75575555 in words is "seventy-five million, five hundred seventy-five thousand, five hundred fifty-five".