55087921798125 has 40 divisors (see below), whose sum is σ = 97182871226496. Its totient is φ = 27651976416000.

The previous prime is 55087921798079. The next prime is 55087921798153. The reversal of 55087921798125 is 52189712978055.

It is not a de Polignac number, because 55087921798125 - 2⁹ = 55087921797613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55087921798125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 864092389 + ... + 864156138.

Almost surely, 2^{55087921798125} is an apocalyptic number.

It is an amenable number.

55087921798125 is a deficient number, since it is larger than the sum of its proper divisors (42094949428371).

55087921798125 is a wasteful number, since it uses less digits than its factorization.

55087921798125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728248567 (or 1728248552 counting only the distinct ones).

The product of its (nonzero) digits is 127008000, while the sum is 69.

The spelling of 55087921798125 in words is "fifty-five trillion, eighty-seven billion, nine hundred twenty-one million, seven hundred ninety-eight thousand, one hundred twenty-five".