55555055490 has 96 divisors (see below), whose sum is σ = 149039714880. Its totient is φ = 13239571840.

The previous prime is 55555055477. The next prime is 55555055503. The reversal of 55555055490 is 9455055555.

It is an interprime number because it is at equal distance from previous prime (55555055477) and next prime (55555055503).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84472 + ... + 343868.

It is an arithmetic number, because the mean of its divisors is an integer number (1552497030).

Almost surely, 2^55555055490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55555055490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74519857440).

55555055490 is an abundant number, since it is smaller than the sum of its proper divisors (93484659390).

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

55555055490 is a wasteful number, since it uses less digits than its factorization.

55555055490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259488 (or 259477 counting only the distinct ones).

The product of its (nonzero) digits is 2812500, while the sum is 48.

The spelling of 55555055490 in words is "fifty-five billion, five hundred fifty-five million, fifty-five thousand, four hundred ninety".