75265561 has 8 divisors (see below), whose sum is σ = 86465024. Its totient is φ = 64177920.

The previous prime is 75265549. The next prime is 75265577. The reversal of 75265561 is 16556257.

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

It is a cyclic number.

It is not a de Polignac number, because 75265561 - 2⁵ = 75265529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75265561.

It is not an unprimeable number, because it can be changed into a prime (75265261) 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, 26505 + ... + 29206.

It is an arithmetic number, because the mean of its divisors is an integer number (10808128).

Almost surely, 2^75265561 is an apocalyptic number.

It is an amenable number.

75265561 is a deficient number, since it is larger than the sum of its proper divisors (11199463).

75265561 is a wasteful number, since it uses less digits than its factorization.

75265561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55911.

The product of its digits is 63000, while the sum is 37.

The square root of 75265561 is about 8675.5726612138. The cubic root of 75265561 is about 422.2134859406.

The spelling of 75265561 in words is "seventy-five million, two hundred sixty-five thousand, five hundred sixty-one".