2051451211 has 4 divisors (see below), whose sum is σ = 2051641872. Its totient is φ = 2051260552.

The previous prime is 2051451203. The next prime is 2051451229. The reversal of 2051451211 is 1121541502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2051451211 - 2³ = 2051451203 is a prime.

It is a super-2 number, since 2×2051451211² = 8416904142226733042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2051451511) 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, 78160 + ... + 101053.

It is an arithmetic number, because the mean of its divisors is an integer number (512910468).

Almost surely, 2^2051451211 is an apocalyptic number.

2051451211 is a deficient number, since it is larger than the sum of its proper divisors (190661).

2051451211 is a wasteful number, since it uses less digits than its factorization.

2051451211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190660.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 2051451211 is about 45292.9488000064. The cubic root of 2051451211 is about 1270.6337818725.

Adding to 2051451211 its reverse (1121541502), we get a palindrome (3172992713).

The spelling of 2051451211 in words is "two billion, fifty-one million, four hundred fifty-one thousand, two hundred eleven".