55122857748 has 360 divisors, whose sum is σ = 177271861312. Its totient is φ = 14670139392.

The previous prime is 55122857743. The next prime is 55122857819. The reversal of 55122857748 is 84775822155.

It is a happy number.

55122857748 is a `hidden beast` number, since 5 + 5 + 1 + 2 + 28 + 577 + 48 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 55122857694 and 55122857703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55122857743) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 568276836 + ... + 568276932.

Almost surely, 2^55122857748 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55122857748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88635930656).

55122857748 is an abundant number, since it is smaller than the sum of its proper divisors (122149003564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55122857748 is an frugal number, since it uses more digits than its factorization.

55122857748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 126 counting only the distinct ones).

The product of its digits is 6272000, while the sum is 54.

The spelling of 55122857748 in words is "fifty-five billion, one hundred twenty-two million, eight hundred fifty-seven thousand, seven hundred forty-eight".