55487017 has 4 divisors (see below), whose sum is σ = 57899520. Its totient is φ = 53074516.

The previous prime is 55486999. The next prime is 55487051. The reversal of 55487017 is 71078455.

55487017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55487017 - 2¹¹ = 55484969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55487417) 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 3 ways as a sum of consecutive naturals, for example, 1206217 + ... + 1206262.

It is an arithmetic number, because the mean of its divisors is an integer number (14474880).

Almost surely, 2^55487017 is an apocalyptic number.

It is an amenable number.

55487017 is a deficient number, since it is larger than the sum of its proper divisors (2412503).

55487017 is a wasteful number, since it uses less digits than its factorization.

55487017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2412502.

The product of its (nonzero) digits is 39200, while the sum is 37.

The square root of 55487017 is about 7448.9608000043. The cubic root of 55487017 is about 381.4144354908.

It can be divided in two parts, 554 and 87017, that added together give a triangular number (87571 = T₄₁₈).

The spelling of 55487017 in words is "fifty-five million, four hundred eighty-seven thousand, seventeen".