55321012355 has 16 divisors (see below), whose sum is σ = 76650974400. Its totient is φ = 37543329792.

The previous prime is 55321012297. The next prime is 55321012441.

55321012355 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 55321012355 - 2¹⁶ = 55320946819 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8144030 + ... + 8150819.

It is an arithmetic number, because the mean of its divisors is an integer number (4790685900).

Almost surely, 2^55321012355 is an apocalyptic number.

55321012355 is a deficient number, since it is larger than the sum of its proper divisors (21329962045).

55321012355 is a wasteful number, since it uses less digits than its factorization.

55321012355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16294958.

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

It can be divided in two parts, 553210 and 12355, that added together give a palindrome (565565).

The spelling of 55321012355 in words is "fifty-five billion, three hundred twenty-one million, twelve thousand, three hundred fifty-five".