55454021250 has 160 divisors (see below), whose sum is σ = 147267559296. Its totient is φ = 13868160000.

The previous prime is 55454021239. The next prime is 55454021279. The reversal of 55454021250 is 5212045455.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 19824852 + ... + 19827648.

Almost surely, 2^55454021250 is an apocalyptic number.

55454021250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 55454021250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73633779648).

55454021250 is an abundant number, since it is smaller than the sum of its proper divisors (91813538046).

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

55454021250 is a wasteful number, since it uses less digits than its factorization.

55454021250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3150 (or 3135 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 33.

The spelling of 55454021250 in words is "fifty-five billion, four hundred fifty-four million, twenty-one thousand, two hundred fifty".