55617822810 has 48 divisors (see below), whose sum is σ = 157752372960. Its totient is φ = 13483108320.

The previous prime is 55617822781. The next prime is 55617822847. The reversal of 55617822810 is 1822871655.

55617822810 is a `hidden beast` number, since 5 + 5 + 617 + 8 + 2 + 28 + 1 + 0 = 666.

It is a super-2 number, since 2×55617822810² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28088820 + ... + 28090799.

It is an arithmetic number, because the mean of its divisors is an integer number (3286507770).

Almost surely, 2^55617822810 is an apocalyptic number.

55617822810 is an abundant number, since it is smaller than the sum of its proper divisors (102134550150).

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

55617822810 is a wasteful number, since it uses less digits than its factorization.

55617822810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56179643 (or 56179640 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 45.

The spelling of 55617822810 in words is "fifty-five billion, six hundred seventeen million, eight hundred twenty-two thousand, eight hundred ten".