56998061 has 2 divisors, whose sum is σ = 56998062. Its totient is φ = 56998060.

The previous prime is 56998049. The next prime is 56998069. The reversal of 56998061 is 16089965.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52113961 + 4884100 = 7219^2 + 2210^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56998061 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56998069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28499030 + 28499031.

It is an arithmetic number, because the mean of its divisors is an integer number (28499031).

Almost surely, 2^56998061 is an apocalyptic number.

It is an amenable number.

56998061 is a deficient number, since it is larger than the sum of its proper divisors (1).

56998061 is an equidigital number, since it uses as much as digits as its factorization.

56998061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 56998061 is about 7549.7060207666. The cubic root of 56998061 is about 384.8457491930.

The spelling of 56998061 in words is "fifty-six million, nine hundred ninety-eight thousand, sixty-one".