56406231 has 24 divisors (see below), whose sum is σ = 98017920. Its totient is φ = 30535056.

The previous prime is 56406209. The next prime is 56406253. The reversal of 56406231 is 13260465.

It is an interprime number because it is at equal distance from previous prime (56406209) and next prime (56406253).

It is not a de Polignac number, because 56406231 - 2¹³ = 56398039 is a prime.

It is a super-2 number, since 2×56406231² = 6363325791250722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56406195 and 56406204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56406431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22365 + ... + 24758.

It is an arithmetic number, because the mean of its divisors is an integer number (4084080).

Almost surely, 2^56406231 is an apocalyptic number.

56406231 is a deficient number, since it is larger than the sum of its proper divisors (41611689).

56406231 is a wasteful number, since it uses less digits than its factorization.

56406231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47155 (or 47152 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 56406231 is about 7510.4081779887. The cubic root of 56406231 is about 383.5091180340.

Adding to 56406231 its reverse (13260465), we get a palindrome (69666696).

The spelling of 56406231 in words is "fifty-six million, four hundred six thousand, two hundred thirty-one".