2455221320 has 64 divisors (see below), whose sum is σ = 5609520000. Its totient is φ = 967034880.

The previous prime is 2455221299. The next prime is 2455221341. The reversal of 2455221320 is 231225542.

It is an interprime number because it is at equal distance from previous prime (2455221299) and next prime (2455221341).

It is a super-2 number, since 2×2455221320² = 12056223460365084800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2455221320.

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, 817181 + ... + 820179.

It is an arithmetic number, because the mean of its divisors is an integer number (87648750).

Almost surely, 2^2455221320 is an apocalyptic number.

2455221320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2455221320 is an abundant number, since it is smaller than the sum of its proper divisors (3154298680).

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

2455221320 is a wasteful number, since it uses less digits than its factorization.

2455221320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318 (or 3314 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 2455221320 is about 49550.1899088187. The cubic root of 2455221320 is about 1349.0567384330.

Adding to 2455221320 its reverse (231225542), we get a palindrome (2686446862).

The spelling of 2455221320 in words is "two billion, four hundred fifty-five million, two hundred twenty-one thousand, three hundred twenty".