2533656251 has 16 divisors (see below), whose sum is σ = 3227304960. Its totient is φ = 1936379520.

The previous prime is 2533656247. The next prime is 2533656299. The reversal of 2533656251 is 1526563352.

It is a cyclic number.

It is not a de Polignac number, because 2533656251 - 2² = 2533656247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2533656221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 558035 + ... + 562556.

It is an arithmetic number, because the mean of its divisors is an integer number (201706560).

Almost surely, 2^2533656251 is an apocalyptic number.

2533656251 is a deficient number, since it is larger than the sum of its proper divisors (693648709).

2533656251 is a wasteful number, since it uses less digits than its factorization.

2533656251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120634.

The product of its digits is 162000, while the sum is 38.

The square root of 2533656251 is about 50335.4373279899. The cubic root of 2533656251 is about 1363.2721545961.

The spelling of 2533656251 in words is "two billion, five hundred thirty-three million, six hundred fifty-six thousand, two hundred fifty-one".