55277807 has 8 divisors (see below), whose sum is σ = 59587920. Its totient is φ = 50976000.

The previous prime is 55277791. The next prime is 55277839. The reversal of 55277807 is 70877255.

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 55277807 - 2⁴ = 55277791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55270807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23432 + ... + 25682.

It is an arithmetic number, because the mean of its divisors is an integer number (7448490).

Almost surely, 2^55277807 is an apocalyptic number.

55277807 is a deficient number, since it is larger than the sum of its proper divisors (4310113).

55277807 is a wasteful number, since it uses less digits than its factorization.

55277807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4153.

The product of its (nonzero) digits is 137200, while the sum is 41.

The square root of 55277807 is about 7434.9046396037. The cubic root of 55277807 is about 380.9344660789.

The spelling of 55277807 in words is "fifty-five million, two hundred seventy-seven thousand, eight hundred seven".