56217534 has 8 divisors (see below), whose sum is σ = 112435080. Its totient is φ = 18739176.

The previous prime is 56217529. The next prime is 56217563. The reversal of 56217534 is 43571265.

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

56217534 is an admirable number.

It is a super-2 number, since 2×56217534² = 6320822258082312, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 56217495 and 56217504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4684789 + ... + 4684800.

It is an arithmetic number, because the mean of its divisors is an integer number (14054385).

Almost surely, 2^56217534 is an apocalyptic number.

56217534 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56217534 is a wasteful number, since it uses less digits than its factorization.

56217534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9369594.

The product of its digits is 25200, while the sum is 33.

The square root of 56217534 is about 7497.8352876013. The cubic root of 56217534 is about 383.0809864484.

Adding to 56217534 its reverse (43571265), we get a palindrome (99788799).

The spelling of 56217534 in words is "fifty-six million, two hundred seventeen thousand, five hundred thirty-four".