5455551220 has 72 divisors (see below), whose sum is σ = 13451943456. Its totient is φ = 1852958016.

The previous prime is 5455551203. The next prime is 5455551221. The reversal of 5455551220 is 221555545.

It is a super-2 number, since 2×5455551220² = 59526078228086976800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5455551221) 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, 78847 + ... + 130873.

It is an arithmetic number, because the mean of its divisors is an integer number (186832548).

Almost surely, 2^5455551220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5455551220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6725971728).

5455551220 is an abundant number, since it is smaller than the sum of its proper divisors (7996392236).

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

5455551220 is a wasteful number, since it uses less digits than its factorization.

5455551220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52157 (or 52148 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 34.

The square root of 5455551220 is about 73861.7033380628. The cubic root of 5455551220 is about 1760.4061584151.

The spelling of 5455551220 in words is "five billion, four hundred fifty-five million, five hundred fifty-one thousand, two hundred twenty".