55799828057 has 12 divisors (see below), whose sum is σ = 57669328080. Its totient is φ = 53988181776.

The previous prime is 55799828053. The next prime is 55799828099. The reversal of 55799828057 is 75082899755.

It is not a de Polignac number, because 55799828057 - 2² = 55799828053 is a prime.

It is a super-2 number, since 2×55799828057² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55799827984 and 55799828002.

It is not an unprimeable number, because it can be changed into a prime (55799828053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131198 + ... + 358904.

It is an arithmetic number, because the mean of its divisors is an integer number (4805777340).

Almost surely, 2^55799828057 is an apocalyptic number.

It is an amenable number.

55799828057 is a deficient number, since it is larger than the sum of its proper divisors (1869500023).

55799828057 is a wasteful number, since it uses less digits than its factorization.

55799828057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227960 (or 227923 counting only the distinct ones).

The product of its (nonzero) digits is 63504000, while the sum is 65.

The spelling of 55799828057 in words is "fifty-five billion, seven hundred ninety-nine million, eight hundred twenty-eight thousand, fifty-seven".