75495561 has 8 divisors (see below), whose sum is σ = 100985664. Its totient is φ = 50167920.

The previous prime is 75495557. The next prime is 75495587. The reversal of 75495561 is 16559457.

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

It is not a de Polignac number, because 75495561 - 2² = 75495557 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (75495551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39526 + ... + 41391.

It is an arithmetic number, because the mean of its divisors is an integer number (12623208).

Almost surely, 2^75495561 is an apocalyptic number.

It is an amenable number.

75495561 is a deficient number, since it is larger than the sum of its proper divisors (25490103).

75495561 is a wasteful number, since it uses less digits than its factorization.

75495561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81231.

The product of its digits is 189000, while the sum is 42.

The square root of 75495561 is about 8688.8181589903. The cubic root of 75495561 is about 422.6431218025.

The spelling of 75495561 in words is "seventy-five million, four hundred ninety-five thousand, five hundred sixty-one".