55251321053 has 8 divisors (see below), whose sum is σ = 58602798072. Its totient is φ = 51911110656.

The previous prime is 55251321029. The next prime is 55251321067. The reversal of 55251321053 is 35012315255.

It can be written as a sum of positive squares in 4 ways, for example, as 14008616164 + 41242704889 = 118358^2 + 203083^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55251321053 - 2²⁰ = 55250272477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55251321953) 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 7 ways as a sum of consecutive naturals, for example, 2806550 + ... + 2826167.

It is an arithmetic number, because the mean of its divisors is an integer number (7325349759).

Almost surely, 2^55251321053 is an apocalyptic number.

It is an amenable number.

55251321053 is a deficient number, since it is larger than the sum of its proper divisors (3351477019).

55251321053 is a wasteful number, since it uses less digits than its factorization.

55251321053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5633311.

The product of its (nonzero) digits is 22500, while the sum is 32.

The spelling of 55251321053 in words is "fifty-five billion, two hundred fifty-one million, three hundred twenty-one thousand, fifty-three".