55503000280 has 96 divisors (see below), whose sum is σ = 154545256800. Its totient is φ = 17565769728.

The previous prime is 55503000277. The next prime is 55503000281. The reversal of 55503000280 is 8200030555.

55503000280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55503000281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 539145 + ... + 633784.

It is an arithmetic number, because the mean of its divisors is an integer number (1609846425).

Almost surely, 2^55503000280 is an apocalyptic number.

It is an amenable number.

55503000280 is an abundant number, since it is smaller than the sum of its proper divisors (99042256520).

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

55503000280 is a wasteful number, since it uses less digits than its factorization.

55503000280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172973 (or 1172956 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The spelling of 55503000280 in words is "fifty-five billion, five hundred three million, two hundred eighty", and thus it is an aban number.