56438517 has 8 divisors (see below), whose sum is σ = 75731296. Its totient is φ = 37385712.

The previous prime is 56438477. The next prime is 56438537. The reversal of 56438517 is 71583465.

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

It is a de Polignac number, because none of the positive numbers 2^k-56438517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56438537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59443 + ... + 60384.

It is an arithmetic number, because the mean of its divisors is an integer number (9466412).

Almost surely, 2^56438517 is an apocalyptic number.

It is an amenable number.

56438517 is a deficient number, since it is larger than the sum of its proper divisors (19292779).

56438517 is a wasteful number, since it uses less digits than its factorization.

56438517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119987.

The product of its digits is 100800, while the sum is 39.

The square root of 56438517 is about 7512.5572876351. The cubic root of 56438517 is about 383.5822755174.

The spelling of 56438517 in words is "fifty-six million, four hundred thirty-eight thousand, five hundred seventeen".