55322657 has 12 divisors (see below), whose sum is σ = 60335100. Its totient is φ = 50724336.

The previous prime is 55322647. The next prime is 55322671. The reversal of 55322657 is 75622355.

It can be written as a sum of positive squares in 6 ways, for example, as 46566976 + 8755681 = 6824^2 + 2959^2 .

It is not a de Polignac number, because 55322657 - 2¹⁰ = 55321633 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (55322647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 371219 + ... + 371367.

It is an arithmetic number, because the mean of its divisors is an integer number (5027925).

Almost surely, 2^55322657 is an apocalyptic number.

It is an amenable number.

55322657 is a deficient number, since it is larger than the sum of its proper divisors (5012443).

55322657 is an frugal number, since it uses more digits than its factorization.

55322657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 162 counting only the distinct ones).

The product of its digits is 63000, while the sum is 35.

The square root of 55322657 is about 7437.9202066169. The cubic root of 55322657 is about 381.0374627616.

The spelling of 55322657 in words is "fifty-five million, three hundred twenty-two thousand, six hundred fifty-seven".