55415315533 has 2 divisors, whose sum is σ = 55415315534. Its totient is φ = 55415315532.

The previous prime is 55415315479. The next prime is 55415315569. The reversal of 55415315533 is 33551351455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28736013289 + 26679302244 = 169517^2 + 163338^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55415315533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55415315933) 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 as a sum of consecutive naturals, namely, 27707657766 + 27707657767.

It is an arithmetic number, because the mean of its divisors is an integer number (27707657767).

Almost surely, 2^55415315533 is an apocalyptic number.

It is an amenable number.

55415315533 is a deficient number, since it is larger than the sum of its proper divisors (1).

55415315533 is an equidigital number, since it uses as much as digits as its factorization.

55415315533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 337500, while the sum is 40.

Adding to 55415315533 its reverse (33551351455), we get a palindrome (88966666988).

The spelling of 55415315533 in words is "fifty-five billion, four hundred fifteen million, three hundred fifteen thousand, five hundred thirty-three".