55820707 has 4 divisors (see below), whose sum is σ = 59104296. Its totient is φ = 52537120.

The previous prime is 55820671. The next prime is 55820717. The reversal of 55820707 is 70702855.

55820707 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.

It is a cyclic number.

It is not a de Polignac number, because 55820707 - 2¹⁵ = 55787939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55820717) 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, 1641769 + ... + 1641802.

It is an arithmetic number, because the mean of its divisors is an integer number (14776074).

Almost surely, 2^55820707 is an apocalyptic number.

55820707 is a deficient number, since it is larger than the sum of its proper divisors (3283589).

55820707 is a wasteful number, since it uses less digits than its factorization.

55820707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3283588.

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 55820707 is about 7471.3256521182. The cubic root of 55820707 is about 382.1774962532.

The spelling of 55820707 in words is "fifty-five million, eight hundred twenty thousand, seven hundred seven".