56909161 has 8 divisors (see below), whose sum is σ = 60092000. Its totient is φ = 53745120.

The previous prime is 56909159. The next prime is 56909179. The reversal of 56909161 is 16190965.

56909161 = T₆₁₅₈ + T₆₁₅₉ + T₆₁₆₀.

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 56909161 - 2¹ = 56909159 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56909161.

It is not an unprimeable number, because it can be changed into a prime (56909131) 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, 1765 + ... + 10813.

It is an arithmetic number, because the mean of its divisors is an integer number (7511500).

Almost surely, 2^56909161 is an apocalyptic number.

56909161 is the 6160-th centered triangular number.

It is an amenable number.

56909161 is a deficient number, since it is larger than the sum of its proper divisors (3182839).

56909161 is a wasteful number, since it uses less digits than its factorization.

56909161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9399.

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 56909161 is about 7543.8160767612. The cubic root of 56909161 is about 384.6455634955.

The spelling of 56909161 in words is "fifty-six million, nine hundred nine thousand, one hundred sixty-one".