2656531201 has 4 divisors (see below), whose sum is σ = 2658467412. Its totient is φ = 2654594992.

The previous prime is 2656531187. The next prime is 2656531253. The reversal of 2656531201 is 1021356562.

2656531201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1021356562 = 2 ⋅510678281.

It can be written as a sum of positive squares in 2 ways, for example, as 1897473600 + 759057601 = 43560^2 + 27551^2 .

It is a cyclic number.

It is not a de Polignac number, because 2656531201 - 2⁵ = 2656531169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2656531261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 966046 + ... + 968791.

It is an arithmetic number, because the mean of its divisors is an integer number (664616853).

Almost surely, 2^2656531201 is an apocalyptic number.

It is an amenable number.

2656531201 is a deficient number, since it is larger than the sum of its proper divisors (1936211).

2656531201 is a wasteful number, since it uses less digits than its factorization.

2656531201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1936210.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 2656531201 is about 51541.5482984359. The cubic root of 2656531201 is about 1384.9634332859.

Adding to 2656531201 its reverse (1021356562), we get a palindrome (3677887763).

The spelling of 2656531201 in words is "two billion, six hundred fifty-six million, five hundred thirty-one thousand, two hundred one".