56605231 has 8 divisors (see below), whose sum is σ = 59520384. Its totient is φ = 53727960.

The previous prime is 56605217. The next prime is 56605259. The reversal of 56605231 is 13250665.

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 56605231 - 2¹³ = 56597039 is a prime.

It is a super-2 number, since 2×56605231² = 6408304353126722, 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 56605231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56605271) 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, 6381 + ... + 12406.

It is an arithmetic number, because the mean of its divisors is an integer number (7440048).

Almost surely, 2^56605231 is an apocalyptic number.

56605231 is a deficient number, since it is larger than the sum of its proper divisors (2915153).

56605231 is a wasteful number, since it uses less digits than its factorization.

56605231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18941.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 56605231 is about 7523.6447949116. The cubic root of 56605231 is about 383.9595927353.

Adding to 56605231 its reverse (13250665), we get a palindrome (69855896).

The spelling of 56605231 in words is "fifty-six million, six hundred five thousand, two hundred thirty-one".