55015159 has 2 divisors, whose sum is σ = 55015160. Its totient is φ = 55015158.

The previous prime is 55015157. The next prime is 55015187. The reversal of 55015159 is 95151055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55015159 - 2¹ = 55015157 is a prime.

Together with 55015157, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55015159.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55015157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27507579 + 27507580.

It is an arithmetic number, because the mean of its divisors is an integer number (27507580).

Almost surely, 2^55015159 is an apocalyptic number.

55015159 is a deficient number, since it is larger than the sum of its proper divisors (1).

55015159 is an equidigital number, since it uses as much as digits as its factorization.

55015159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5625, while the sum is 31.

The square root of 55015159 is about 7417.2204362551. The cubic root of 55015159 is about 380.3301816281.

The spelling of 55015159 in words is "fifty-five million, fifteen thousand, one hundred fifty-nine".