56730137 has 8 divisors (see below), whose sum is σ = 57613440. Its totient is φ = 55851120.

The previous prime is 56730133. The next prime is 56730161. The reversal of 56730137 is 73103765.

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 56730137 - 2² = 56730133 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56730133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34187 + ... + 35807.

It is an arithmetic number, because the mean of its divisors is an integer number (7201680).

Almost surely, 2^56730137 is an apocalyptic number.

It is an amenable number.

56730137 is a deficient number, since it is larger than the sum of its proper divisors (883303).

56730137 is a wasteful number, since it uses less digits than its factorization.

56730137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143.

The product of its (nonzero) digits is 13230, while the sum is 32.

The square root of 56730137 is about 7531.9411176668. The cubic root of 56730137 is about 384.2418023688.

The spelling of 56730137 in words is "fifty-six million, seven hundred thirty thousand, one hundred thirty-seven".