75522561 has 16 divisors (see below), whose sum is σ = 103160064. Its totient is φ = 49123584.

The previous prime is 75522529. The next prime is 75522563. The reversal of 75522561 is 16522557.

It is not a de Polignac number, because 75522561 - 2⁵ = 75522529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75522563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60435 + ... + 61671.

It is an arithmetic number, because the mean of its divisors is an integer number (6447504).

Almost surely, 2^75522561 is an apocalyptic number.

It is an amenable number.

75522561 is a deficient number, since it is larger than the sum of its proper divisors (27637503).

75522561 is a wasteful number, since it uses less digits than its factorization.

75522561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720.

The product of its digits is 21000, while the sum is 33.

The square root of 75522561 is about 8690.3717411858. The cubic root of 75522561 is about 422.6935000589.

The spelling of 75522561 in words is "seventy-five million, five hundred twenty-two thousand, five hundred sixty-one".