2227556520 has 384 divisors, whose sum is σ = 8630519040. Its totient is φ = 487710720.

The previous prime is 2227556501. The next prime is 2227556537. The reversal of 2227556520 is 256557222.

It is a happy number.

2227556520 is a `hidden beast` number, since 2 + 2 + 2 + 75 + 565 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6609792 + ... + 6610128.

It is an arithmetic number, because the mean of its divisors is an integer number (22475310).

Almost surely, 2^2227556520 is an apocalyptic number.

2227556520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2227556520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4315259520).

2227556520 is an abundant number, since it is smaller than the sum of its proper divisors (6402962520).

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

2227556520 is a wasteful number, since it uses less digits than its factorization.

2227556520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 36.

The square root of 2227556520 is about 47196.9969383646. The cubic root of 2227556520 is about 1305.9991995161. Note that the first 3 decimals are identical.

The spelling of 2227556520 in words is "two billion, two hundred twenty-seven million, five hundred fifty-six thousand, five hundred twenty".