55806087 has 8 divisors (see below), whose sum is σ = 78785136. Its totient is φ = 35015552.

The previous prime is 55806077. The next prime is 55806089. The reversal of 55806087 is 78060855.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55806087 - 2¹⁰ = 55805063 is a prime.

It is a super-2 number, since 2×55806087² = 6228638692503138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55806089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 547068 + ... + 547169.

It is an arithmetic number, because the mean of its divisors is an integer number (9848142).

Almost surely, 2^55806087 is an apocalyptic number.

55806087 is a deficient number, since it is larger than the sum of its proper divisors (22979049).

55806087 is a wasteful number, since it uses less digits than its factorization.

55806087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094257.

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 55806087 is about 7470.3471806871. The cubic root of 55806087 is about 382.1441279737.

The spelling of 55806087 in words is "fifty-five million, eight hundred six thousand, eighty-seven".