55210705 has 16 divisors (see below), whose sum is σ = 73094400. Its totient is φ = 39698560.

The previous prime is 55210699. The next prime is 55210711. The reversal of 55210705 is 50701255.

It is a happy number.

55210705 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 (55210699) and next prime (55210711).

It is not a de Polignac number, because 55210705 - 2⁹ = 55210193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55210705.

It is an unprimeable number.

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, 745 + ... + 10534.

It is an arithmetic number, because the mean of its divisors is an integer number (4568400).

Almost surely, 2^55210705 is an apocalyptic number.

55210705 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55210705 is a deficient number, since it is larger than the sum of its proper divisors (17883695).

55210705 is a wasteful number, since it uses less digits than its factorization.

55210705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11384.

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 55210705 is about 7430.3906357607. The cubic root of 55210705 is about 380.7802642634.

The spelling of 55210705 in words is "fifty-five million, two hundred ten thousand, seven hundred five".