550621357172 has 6 divisors (see below), whose sum is σ = 963587375058. Its totient is φ = 275310678584.

The previous prime is 550621357171. The next prime is 550621357199. The reversal of 550621357172 is 271753126055.

It can be written as a sum of positive squares in only one way, i.e., 516679190416 + 33942166756 = 718804^2 + 184234^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550621357171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68827669643 + ... + 68827669650.

It is an arithmetic number, because the mean of its divisors is an integer number (160597895843).

Almost surely, 2^550621357172 is an apocalyptic number.

It is an amenable number.

550621357172 is a deficient number, since it is larger than the sum of its proper divisors (412966017886).

550621357172 is a wasteful number, since it uses less digits than its factorization.

550621357172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137655339297 (or 137655339295 counting only the distinct ones).

The product of its (nonzero) digits is 441000, while the sum is 44.

The spelling of 550621357172 in words is "five hundred fifty billion, six hundred twenty-one million, three hundred fifty-seven thousand, one hundred seventy-two".