55922917 has 4 divisors (see below), whose sum is σ = 55938060. Its totient is φ = 55907776.

The previous prime is 55922869. The next prime is 55922927. The reversal of 55922917 is 71922955.

55922917 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 brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 19368801 + 36554116 = 4401^2 + 6046^2 .

It is a cyclic number.

It is not a de Polignac number, because 55922917 - 2²³ = 47534309 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55922917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55922927) 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, 2013 + ... + 10765.

It is an arithmetic number, because the mean of its divisors is an integer number (13984515).

Almost surely, 2^55922917 is an apocalyptic number.

It is an amenable number.

55922917 is a deficient number, since it is larger than the sum of its proper divisors (15143).

55922917 is an equidigital number, since it uses as much as digits as its factorization.

55922917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15142.

The product of its digits is 56700, while the sum is 40.

The square root of 55922917 is about 7478.1626754170. The cubic root of 55922917 is about 382.4106149089.

The spelling of 55922917 in words is "fifty-five million, nine hundred twenty-two thousand, nine hundred seventeen".