55215162243550 has 48 divisors (see below), whose sum is σ = 102768230349792. Its totient is φ = 22071439209600.

The previous prime is 55215162243499. The next prime is 55215162243569. The reversal of 55215162243550 is 5534226151255.

It is a self number, because there is not a number n which added to its sum of digits gives 55215162243550.

It is a congruent 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, 579414007 + ... + 579509293.

It is an arithmetic number, because the mean of its divisors is an integer number (2141004798954).

Almost surely, 2^{55215162243550} is an apocalyptic number.

55215162243550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55215162243550 is a deficient number, since it is larger than the sum of its proper divisors (47553068106242).

55215162243550 is a wasteful number, since it uses less digits than its factorization.

55215162243550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102853 (or 102848 counting only the distinct ones).

The product of its (nonzero) digits is 1800000, while the sum is 46.

The spelling of 55215162243550 in words is "fifty-five trillion, two hundred fifteen billion, one hundred sixty-two million, two hundred forty-three thousand, five hundred fifty".