56161087 has 2 divisors, whose sum is σ = 56161088. Its totient is φ = 56161086.

The previous prime is 56161069. The next prime is 56161121. The reversal of 56161087 is 78016165.

It is an a-pointer prime, because the next prime (56161121) can be obtained adding 56161087 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56161087 - 2¹¹ = 56159039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56167087) 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 as a sum of consecutive naturals, namely, 28080543 + 28080544.

It is an arithmetic number, because the mean of its divisors is an integer number (28080544).

Almost surely, 2^56161087 is an apocalyptic number.

56161087 is a deficient number, since it is larger than the sum of its proper divisors (1).

56161087 is an equidigital number, since it uses as much as digits as its factorization.

56161087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 56161087 is about 7494.0701224368. The cubic root of 56161087 is about 382.9527286358.

The spelling of 56161087 in words is "fifty-six million, one hundred sixty-one thousand, eighty-seven".