56615361 has 8 divisors (see below), whose sum is σ = 82349664. Its totient is φ = 34312320.

The previous prime is 56615359. The next prime is 56615371. The reversal of 56615361 is 16351665.

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

It is not a de Polignac number, because 56615361 - 2¹ = 56615359 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 1715617 = 56615361 / (5 + 6 + 6 + 1 + 5 + 3 + 6 + 1).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56615341) 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, 857776 + ... + 857841.

It is an arithmetic number, because the mean of its divisors is an integer number (10293708).

Almost surely, 2^56615361 is an apocalyptic number.

It is an amenable number.

56615361 is a deficient number, since it is larger than the sum of its proper divisors (25734303).

56615361 is a wasteful number, since it uses less digits than its factorization.

56615361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715631.

The product of its digits is 16200, while the sum is 33.

The square root of 56615361 is about 7524.3179757371. The cubic root of 56615361 is about 383.9824956756.

The spelling of 56615361 in words is "fifty-six million, six hundred fifteen thousand, three hundred sixty-one".