75325561 has 8 divisors (see below), whose sum is σ = 77802120. Its totient is φ = 72888192.

The previous prime is 75325559. The next prime is 75325573. The reversal of 75325561 is 16552357.

It can be written as a sum of positive squares in 4 ways, for example, as 15649936 + 59675625 = 3956^2 + 7725^2 .

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 75325561 - 2¹ = 75325559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75325501) 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, 5866 + ... + 13603.

It is an arithmetic number, because the mean of its divisors is an integer number (9725265).

Almost surely, 2^75325561 is an apocalyptic number.

It is an amenable number.

75325561 is a deficient number, since it is larger than the sum of its proper divisors (2476559).

75325561 is a wasteful number, since it uses less digits than its factorization.

75325561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19595.

The product of its digits is 31500, while the sum is 34.

The square root of 75325561 is about 8679.0299573167. The cubic root of 75325561 is about 422.3256491496.

The spelling of 75325561 in words is "seventy-five million, three hundred twenty-five thousand, five hundred sixty-one".