75502561 has 8 divisors (see below), whose sum is σ = 79673600. Its totient is φ = 71351280.

The previous prime is 75502549. The next prime is 75502579. The reversal of 75502561 is 16520557.

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 75502561 - 2⁵ = 75502529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75502541) 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, 3280 + ... + 12718.

It is an arithmetic number, because the mean of its divisors is an integer number (9959200).

Almost surely, 2^75502561 is an apocalyptic number.

It is an amenable number.

75502561 is a deficient number, since it is larger than the sum of its proper divisors (4171039).

75502561 is a wasteful number, since it uses less digits than its factorization.

75502561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9879.

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 75502561 is about 8689.2209662317. The cubic root of 75502561 is about 422.6561839852.

The spelling of 75502561 in words is "seventy-five million, five hundred two thousand, five hundred sixty-one".