55159009 has 2 divisors, whose sum is σ = 55159010. Its totient is φ = 55159008.

The previous prime is 55158989. The next prime is 55159031. The reversal of 55159009 is 90095155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47651409 + 7507600 = 6903^2 + 2740^2 .

It is a cyclic number.

It is not a de Polignac number, because 55159009 - 2¹³ = 55150817 is a prime.

It is not a weakly prime, because it can be changed into another prime (55159099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27579504 + 27579505.

It is an arithmetic number, because the mean of its divisors is an integer number (27579505).

Almost surely, 2^55159009 is an apocalyptic number.

It is an amenable number.

55159009 is a deficient number, since it is larger than the sum of its proper divisors (1).

55159009 is an equidigital number, since it uses as much as digits as its factorization.

55159009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10125, while the sum is 34.

The square root of 55159009 is about 7426.9111345162. The cubic root of 55159009 is about 380.6613805335.

The spelling of 55159009 in words is "fifty-five million, one hundred fifty-nine thousand, nine".