2755221534 has 96 divisors (see below), whose sum is σ = 6844492800. Its totient is φ = 820329120.

The previous prime is 2755221529. The next prime is 2755221551. The reversal of 2755221534 is 4351225572.

2755221534 is a `hidden beast` number, since 2 + 75 + 52 + 2 + 1 + 534 = 666.

It is a congruent 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, 278037 + ... + 287775.

It is an arithmetic number, because the mean of its divisors is an integer number (71296800).

Almost surely, 2^2755221534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2755221534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3422246400).

2755221534 is an abundant number, since it is smaller than the sum of its proper divisors (4089271266).

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

2755221534 is a wasteful number, since it uses less digits than its factorization.

2755221534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9807 (or 9788 counting only the distinct ones).

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

The square root of 2755221534 is about 52490.2041718262. The cubic root of 2755221534 is about 1401.9058285563.

The spelling of 2755221534 in words is "two billion, seven hundred fifty-five million, two hundred twenty-one thousand, five hundred thirty-four".