55020405251 has 8 divisors (see below), whose sum is σ = 62916761184. Its totient is φ = 47133123840.

The previous prime is 55020405247. The next prime is 55020405269. The reversal of 55020405251 is 15250402055.

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 55020405251 - 2² = 55020405247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55020105251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2255630 + ... + 2279891.

It is an arithmetic number, because the mean of its divisors is an integer number (7864595148).

Almost surely, 2^55020405251 is an apocalyptic number.

55020405251 is a deficient number, since it is larger than the sum of its proper divisors (7896355933).

55020405251 is a wasteful number, since it uses less digits than its factorization.

55020405251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4537261.

The product of its (nonzero) digits is 10000, while the sum is 29.

The spelling of 55020405251 in words is "fifty-five billion, twenty million, four hundred five thousand, two hundred fifty-one".