75567755 has 4 divisors (see below), whose sum is σ = 90681312. Its totient is φ = 60454200.

The previous prime is 75567721. The next prime is 75567757. The reversal of 75567755 is 55776557.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55776557 = 409 ⋅136373.

It is not a de Polignac number, because 75567755 - 2⁶ = 75567691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75567757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7556771 + ... + 7556780.

It is an arithmetic number, because the mean of its divisors is an integer number (22670328).

Almost surely, 2^75567755 is an apocalyptic number.

75567755 is a deficient number, since it is larger than the sum of its proper divisors (15113557).

75567755 is a wasteful number, since it uses less digits than its factorization.

75567755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15113556.

The product of its digits is 1286250, while the sum is 47.

The square root of 75567755 is about 8692.9715862874. The cubic root of 75567755 is about 422.7777989337. Note that the first 4 decimals are identical.

The spelling of 75567755 in words is "seventy-five million, five hundred sixty-seven thousand, seven hundred fifty-five".