56286331 has 4 divisors (see below), whose sum is σ = 56307672. Its totient is φ = 56264992.

The previous prime is 56286323. The next prime is 56286343. The reversal of 56286331 is 13368265.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13368265 = 5 ⋅2673653.

It is a cyclic number.

It is not a de Polignac number, because 56286331 - 2³ = 56286323 is a prime.

It is a super-2 number, since 2×56286331² = 6336302114883122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56286311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6046 + ... + 12211.

It is an arithmetic number, because the mean of its divisors is an integer number (14076918).

Almost surely, 2^56286331 is an apocalyptic number.

56286331 is a deficient number, since it is larger than the sum of its proper divisors (21341).

56286331 is a wasteful number, since it uses less digits than its factorization.

56286331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21340.

The product of its digits is 25920, while the sum is 34.

The square root of 56286331 is about 7502.4216756991. The cubic root of 56286331 is about 383.2371896669.

The spelling of 56286331 in words is "fifty-six million, two hundred eighty-six thousand, three hundred thirty-one".