2656589251 has 8 divisors (see below), whose sum is σ = 2662711904. Its totient is φ = 2650475520.

The previous prime is 2656589249. The next prime is 2656589261. The reversal of 2656589251 is 1529856562.

It is a happy number.

2656589251 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 2656589251 - 2¹ = 2656589249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2656589195 and 2656589204.

It is not an unprimeable number, because it can be changed into a prime (2656589231) 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, 1148386 + ... + 1150696.

It is an arithmetic number, because the mean of its divisors is an integer number (332838988).

Almost surely, 2^2656589251 is an apocalyptic number.

2656589251 is a deficient number, since it is larger than the sum of its proper divisors (6122653).

2656589251 is a wasteful number, since it uses less digits than its factorization.

2656589251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4461.

The product of its digits is 1296000, while the sum is 49.

The square root of 2656589251 is about 51542.1114332737. Note that the first 3 decimals coincide. The cubic root of 2656589251 is about 1384.9735211957.

The spelling of 2656589251 in words is "two billion, six hundred fifty-six million, five hundred eighty-nine thousand, two hundred fifty-one".