56216501 has 8 divisors (see below), whose sum is σ = 64934784. Its totient is φ = 48099520.

The previous prime is 56216491. The next prime is 56216507. The reversal of 56216501 is 10561265.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56216501 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 (56216507) 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, 150125 + ... + 150498.

It is an arithmetic number, because the mean of its divisors is an integer number (8116848).

Almost surely, 2^56216501 is an apocalyptic number.

It is an amenable number.

56216501 is a deficient number, since it is larger than the sum of its proper divisors (8718283).

56216501 is a wasteful number, since it uses less digits than its factorization.

56216501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300651.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 56216501 is about 7497.7664007356. The cubic root of 56216501 is about 383.0786400566.

Adding to 56216501 its reverse (10561265), we get a palindrome (66777766).

The spelling of 56216501 in words is "fifty-six million, two hundred sixteen thousand, five hundred one".