2555434021 has 16 divisors (see below), whose sum is σ = 3097444608. Its totient is φ = 2060784000.

The previous prime is 2555434003. The next prime is 2555434031. The reversal of 2555434021 is 1204345552.

It is a cyclic number.

It is not a de Polignac number, because 2555434021 - 2¹⁷ = 2555302949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2555434001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120280 + ... + 139921.

It is an arithmetic number, because the mean of its divisors is an integer number (193590288).

Almost surely, 2^2555434021 is an apocalyptic number.

It is an amenable number.

2555434021 is a deficient number, since it is larger than the sum of its proper divisors (542010587).

2555434021 is a wasteful number, since it uses less digits than its factorization.

2555434021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260292.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 2555434021 is about 50551.3008833601. The cubic root of 2555434021 is about 1367.1669697604.

Adding to 2555434021 its reverse (1204345552), we get a palindrome (3759779573).

The spelling of 2555434021 in words is "two billion, five hundred fifty-five million, four hundred thirty-four thousand, twenty-one".