5215205655 has 40 divisors (see below), whose sum is σ = 10198633104. Its totient is φ = 2528582400.

The previous prime is 5215205641. The next prime is 5215205659. The reversal of 5215205655 is 5565025125.

It is not a de Polignac number, because 5215205655 - 2⁶ = 5215205591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5215205659) 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 39 ways as a sum of consecutive naturals, for example, 580866 + ... + 589775.

Almost surely, 2^5215205655 is an apocalyptic number.

5215205655 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

5215205655 is a deficient number, since it is larger than the sum of its proper divisors (4983427449).

5215205655 is a wasteful number, since it uses less digits than its factorization.

5215205655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170669 (or 1170660 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

The square root of 5215205655 is about 72216.3807941107. The cubic root of 5215205655 is about 1734.1652510701.

The spelling of 5215205655 in words is "five billion, two hundred fifteen million, two hundred five thousand, six hundred fifty-five".