55229490840 has 64 divisors (see below), whose sum is σ = 165740486400. Its totient is φ = 14723240832.

The previous prime is 55229490773. The next prime is 55229490851. The reversal of 55229490840 is 4809492255.

It is a self number, because there is not a number n which added to its sum of digits gives 55229490840.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320469 + ... + 461691.

It is an arithmetic number, because the mean of its divisors is an integer number (2589695100).

Almost surely, 2^55229490840 is an apocalyptic number.

It is an amenable number.

55229490840 is an abundant number, since it is smaller than the sum of its proper divisors (110510995560).

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

55229490840 is a wasteful number, since it uses less digits than its factorization.

55229490840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144496 (or 144492 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 48.

The spelling of 55229490840 in words is "fifty-five billion, two hundred twenty-nine million, four hundred ninety thousand, eight hundred forty".