55521205455 has 8 divisors (see below), whose sum is σ = 88833928752. Its totient is φ = 29611309568.

The previous prime is 55521205427. The next prime is 55521205457. The reversal of 55521205455 is 55450212555.

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 55521205455 - 2⁵ = 55521205423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55521205457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1850706834 + ... + 1850706863.

It is an arithmetic number, because the mean of its divisors is an integer number (11104241094).

Almost surely, 2^55521205455 is an apocalyptic number.

55521205455 is a deficient number, since it is larger than the sum of its proper divisors (33312723297).

55521205455 is a wasteful number, since it uses less digits than its factorization.

55521205455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3701413705.

The product of its (nonzero) digits is 250000, while the sum is 39.

The spelling of 55521205455 in words is "fifty-five billion, five hundred twenty-one million, two hundred five thousand, four hundred fifty-five".