2555232421 has 8 divisors (see below), whose sum is σ = 2942558784. Its totient is φ = 2173479360.

The previous prime is 2555232373. The next prime is 2555232497. The reversal of 2555232421 is 1242325552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2555232421 - 2⁷ = 2555232293 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 (2555232521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1392340 + ... + 1394173.

It is an arithmetic number, because the mean of its divisors is an integer number (367819848).

Almost surely, 2^2555232421 is an apocalyptic number.

It is an amenable number.

2555232421 is a deficient number, since it is larger than the sum of its proper divisors (387326363).

2555232421 is a wasteful number, since it uses less digits than its factorization.

2555232421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2786651.

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

The square root of 2555232421 is about 50549.3068300644. The cubic root of 2555232421 is about 1367.1310165581.

Adding to 2555232421 its reverse (1242325552), we get a palindrome (3797557973).

The spelling of 2555232421 in words is "two billion, five hundred fifty-five million, two hundred thirty-two thousand, four hundred twenty-one".