55113215722 has 16 divisors (see below), whose sum is σ = 87678432072. Its totient is φ = 25892467200.

The previous prime is 55113215719. The next prime is 55113215753. The reversal of 55113215722 is 22751231155.

55113215722 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 46203932401 + 8909283321 = 214951^2 + 94389^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1328133 + ... + 1369000.

Almost surely, 2^55113215722 is an apocalyptic number.

55113215722 is a deficient number, since it is larger than the sum of its proper divisors (32565216350).

55113215722 is a wasteful number, since it uses less digits than its factorization.

55113215722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2697753.

The product of its digits is 21000, while the sum is 34.

Adding to 55113215722 its reverse (22751231155), we get a palindrome (77864446877).

The spelling of 55113215722 in words is "fifty-five billion, one hundred thirteen million, two hundred fifteen thousand, seven hundred twenty-two".