30775161 has 8 divisors (see below), whose sum is σ = 41553280. Its totient is φ = 20256912.

The previous prime is 30775153. The next prime is 30775181. The reversal of 30775161 is 16157703.

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

It is not a de Polignac number, because 30775161 - 2³ = 30775153 is a prime.

It is a super-2 number, since 2×30775161² = 1894221069151842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30775141) 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, 64690 + ... + 65163.

It is an arithmetic number, because the mean of its divisors is an integer number (5194160).

Almost surely, 2^30775161 is an apocalyptic number.

It is an amenable number.

30775161 is a deficient number, since it is larger than the sum of its proper divisors (10778119).

30775161 is a wasteful number, since it uses less digits than its factorization.

30775161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129935.

The product of its (nonzero) digits is 4410, while the sum is 30.

The square root of 30775161 is about 5547.5364802766. The cubic root of 30775161 is about 313.3767540802.

The spelling of 30775161 in words is "thirty million, seven hundred seventy-five thousand, one hundred sixty-one".