75517055 has 4 divisors (see below), whose sum is σ = 90620472. Its totient is φ = 60413640.

The previous prime is 75517051. The next prime is 75517061. The reversal of 75517055 is 55071557.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55071557 = 19 ⋅2898503.

It is not a de Polignac number, because 75517055 - 2² = 75517051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75517051) 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, 7551701 + ... + 7551710.

It is an arithmetic number, because the mean of its divisors is an integer number (22655118).

Almost surely, 2^75517055 is an apocalyptic number.

75517055 is a deficient number, since it is larger than the sum of its proper divisors (15103417).

75517055 is a wasteful number, since it uses less digits than its factorization.

75517055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15103416.

The product of its (nonzero) digits is 30625, while the sum is 35.

The square root of 75517055 is about 8690.0549480426. The cubic root of 75517055 is about 422.6832276011.

The spelling of 75517055 in words is "seventy-five million, five hundred seventeen thousand, fifty-five".