56061331 has 2 divisors, whose sum is σ = 56061332. Its totient is φ = 56061330.

The previous prime is 56061329. The next prime is 56061349. The reversal of 56061331 is 13316065.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56061331 - 2¹ = 56061329 is a prime.

It is a super-2 number, since 2×56061331² = 6285745666983122, which contains 22 as substring.

Together with 56061329, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 56061296 and 56061305.

It is not a weakly prime, because it can be changed into another prime (56061371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28030665 + 28030666.

It is an arithmetic number, because the mean of its divisors is an integer number (28030666).

Almost surely, 2^56061331 is an apocalyptic number.

56061331 is a deficient number, since it is larger than the sum of its proper divisors (1).

56061331 is an equidigital number, since it uses as much as digits as its factorization.

56061331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 56061331 is about 7487.4115019812. The cubic root of 56061331 is about 382.7258546238.

Adding to 56061331 its reverse (13316065), we get a palindrome (69377396).

The spelling of 56061331 in words is "fifty-six million, sixty-one thousand, three hundred thirty-one".