75475161 has 6 divisors (see below), whose sum is σ = 109019690. Its totient is φ = 50316768.

The previous prime is 75475157. The next prime is 75475187. The reversal of 75475161 is 16157457.

75475161 is a `hidden beast` number, since 7 + 547 + 51 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 49617936 + 25857225 = 7044^2 + 5085^2 .

It is not a de Polignac number, because 75475161 - 2² = 75475157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75475151) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4193056 + ... + 4193073.

Almost surely, 2^75475161 is an apocalyptic number.

It is an amenable number.

75475161 is a deficient number, since it is larger than the sum of its proper divisors (33544529).

75475161 is a wasteful number, since it uses less digits than its factorization.

75475161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8386135 (or 8386132 counting only the distinct ones).

The product of its digits is 29400, while the sum is 36.

The square root of 75475161 is about 8687.6441570773. The cubic root of 75475161 is about 422.6050502644.

The spelling of 75475161 in words is "seventy-five million, four hundred seventy-five thousand, one hundred sixty-one".