2730255021 has 24 divisors (see below), whose sum is σ = 4253460120. Its totient is φ = 1677626496.

The previous prime is 2730255001. The next prime is 2730255041. The reversal of 2730255021 is 1205520372.

2730255021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2730255001) and next prime (2730255041).

It can be written as a sum of positive squares in 4 ways, for example, as 880308900 + 1849946121 = 29670^2 + 43011^2 .

It is not a de Polignac number, because 2730255021 - 2¹³ = 2730246829 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2730255001) 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, 61975 + ... + 96443.

It is an arithmetic number, because the mean of its divisors is an integer number (177227505).

Almost surely, 2^2730255021 is an apocalyptic number.

It is an amenable number.

2730255021 is a deficient number, since it is larger than the sum of its proper divisors (1523205099).

2730255021 is a wasteful number, since it uses less digits than its factorization.

2730255021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35165 (or 35162 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 2730255021 is about 52251.8422737419. The cubic root of 2730255021 is about 1397.6585045772.

Adding to 2730255021 its reverse (1205520372), we get a palindrome (3935775393).

The spelling of 2730255021 in words is "two billion, seven hundred thirty million, two hundred fifty-five thousand, twenty-one".