55987017 has 16 divisors (see below), whose sum is σ = 76735680. Its totient is φ = 36288000.

The previous prime is 55987013. The next prime is 55987021. The reversal of 55987017 is 71078955.

55987017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55987013) and next prime (55987021).

It is not a de Polignac number, because 55987017 - 2² = 55987013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55987017.

It is not an unprimeable number, because it can be changed into a prime (55987013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46017 + ... + 47217.

It is an arithmetic number, because the mean of its divisors is an integer number (4795980).

Almost surely, 2^55987017 is an apocalyptic number.

It is an amenable number.

55987017 is a deficient number, since it is larger than the sum of its proper divisors (20748663).

55987017 is a wasteful number, since it uses less digits than its factorization.

55987017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1624.

The product of its (nonzero) digits is 88200, while the sum is 42.

The square root of 55987017 is about 7482.4472600881. The cubic root of 55987017 is about 382.5566680960.

The spelling of 55987017 in words is "fifty-five million, nine hundred eighty-seven thousand, seventeen".