2655562021 has 8 divisors (see below), whose sum is σ = 3132829184. Its totient is φ = 2202770160.

The previous prime is 2655562003. The next prime is 2655562031. The reversal of 2655562021 is 1202655562.

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 2655562021 - 2⁵ = 2655561989 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 (2655562031) 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, 6118590 + ... + 6119023.

It is an arithmetic number, because the mean of its divisors is an integer number (391603648).

Almost surely, 2^2655562021 is an apocalyptic number.

It is an amenable number.

2655562021 is a deficient number, since it is larger than the sum of its proper divisors (477267163).

2655562021 is a wasteful number, since it uses less digits than its factorization.

2655562021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12237651.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 2655562021 is about 51532.1455113214. The cubic root of 2655562021 is about 1384.7949877924.

The spelling of 2655562021 in words is "two billion, six hundred fifty-five million, five hundred sixty-two thousand, twenty-one".