55621022053 has 4 divisors (see below), whose sum is σ = 55626824908. Its totient is φ = 55615219200.

The previous prime is 55621021999. The next prime is 55621022081. The reversal of 55621022053 is 35022012655.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49658556964 + 5962465089 = 222842^2 + 77217^2 .

It is a cyclic number.

It is not a de Polignac number, because 55621022053 - 2⁹ = 55621021541 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 (55621026053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2887026 + ... + 2906227.

It is an arithmetic number, because the mean of its divisors is an integer number (13906706227).

Almost surely, 2^55621022053 is an apocalyptic number.

It is an amenable number.

55621022053 is a deficient number, since it is larger than the sum of its proper divisors (5802855).

55621022053 is an equidigital number, since it uses as much as digits as its factorization.

55621022053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5802854.

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 55621022053 in words is "fifty-five billion, six hundred twenty-one million, twenty-two thousand, fifty-three".