2655172421 has 8 divisors (see below), whose sum is σ = 3066937344. Its totient is φ = 2271805120.

The previous prime is 2655172411. The next prime is 2655172549. The reversal of 2655172421 is 1242715562.

2655172421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2655172421 - 2²² = 2650978117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2655172411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7099205 + ... + 7099578.

It is an arithmetic number, because the mean of its divisors is an integer number (383367168).

Almost surely, 2^2655172421 is an apocalyptic number.

It is an amenable number.

2655172421 is a deficient number, since it is larger than the sum of its proper divisors (411764923).

2655172421 is a wasteful number, since it uses less digits than its factorization.

2655172421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14198811.

The product of its digits is 33600, while the sum is 35.

The square root of 2655172421 is about 51528.3652079124. The cubic root of 2655172421 is about 1384.7272629555.

Adding to 2655172421 its reverse (1242715562), we get a palindrome (3897887983).

The spelling of 2655172421 in words is "two billion, six hundred fifty-five million, one hundred seventy-two thousand, four hundred twenty-one".