2011533251 has 24 divisors (see below), whose sum is σ = 2530592064. Its totient is φ = 1584817920.

The previous prime is 2011533217. The next prime is 2011533253. The reversal of 2011533251 is 1523351102.

It is a happy number.

It is not a de Polignac number, because 2011533251 - 2⁶ = 2011533187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2011533253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146966 + ... + 160068.

It is an arithmetic number, because the mean of its divisors is an integer number (105441336).

Almost surely, 2^2011533251 is an apocalyptic number.

2011533251 is a deficient number, since it is larger than the sum of its proper divisors (519058813).

2011533251 is a wasteful number, since it uses less digits than its factorization.

2011533251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13371 (or 13364 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 2011533251 is about 44850.1198549123. The cubic root of 2011533251 is about 1262.3382404392.

Adding to 2011533251 its reverse (1523351102), we get a palindrome (3534884353).

The spelling of 2011533251 in words is "two billion, eleven million, five hundred thirty-three thousand, two hundred fifty-one".