55835609 has 2 divisors, whose sum is σ = 55835610. Its totient is φ = 55835608.

The previous prime is 55835581. The next prime is 55835621. The reversal of 55835609 is 90653855.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29539225 + 26296384 = 5435^2 + 5128^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55835609 is a prime.

It is not a weakly prime, because it can be changed into another prime (55835639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27917804 + 27917805.

It is an arithmetic number, because the mean of its divisors is an integer number (27917805).

Almost surely, 2^55835609 is an apocalyptic number.

It is an amenable number.

55835609 is a deficient number, since it is larger than the sum of its proper divisors (1).

55835609 is an equidigital number, since it uses as much as digits as its factorization.

55835609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 55835609 is about 7472.3228650802. The cubic root of 55835609 is about 382.2115021663.

The spelling of 55835609 in words is "fifty-five million, eight hundred thirty-five thousand, six hundred nine".