56416231 has 4 divisors (see below), whose sum is σ = 57941032. Its totient is φ = 54891432.

The previous prime is 56416219. The next prime is 56416237. The reversal of 56416231 is 13261465.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56416231 - 2¹³ = 56408039 is a prime.

It is a super-2 number, since 2×56416231² = 6365582240490722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56416231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56416237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 762345 + ... + 762418.

It is an arithmetic number, because the mean of its divisors is an integer number (14485258).

Almost surely, 2^56416231 is an apocalyptic number.

56416231 is a deficient number, since it is larger than the sum of its proper divisors (1524801).

56416231 is a wasteful number, since it uses less digits than its factorization.

56416231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524800.

The product of its digits is 4320, while the sum is 28.

The square root of 56416231 is about 7511.0738912622. The cubic root of 56416231 is about 383.5317802146.

Adding to 56416231 its reverse (13261465), we get a palindrome (69677696).

The spelling of 56416231 in words is "fifty-six million, four hundred sixteen thousand, two hundred thirty-one".