2051115433 has 4 divisors (see below), whose sum is σ = 2171769300. Its totient is φ = 1930461568.

The previous prime is 2051115431. The next prime is 2051115439. The reversal of 2051115433 is 3345111502.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1364046489 + 687068944 = 36933^2 + 26212^2 .

It is a cyclic number.

It is not a de Polignac number, because 2051115433 - 2¹ = 2051115431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2051115398 and 2051115407.

It is not an unprimeable number, because it can be changed into a prime (2051115431) 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, 60326908 + ... + 60326941.

It is an arithmetic number, because the mean of its divisors is an integer number (542942325).

Almost surely, 2^2051115433 is an apocalyptic number.

It is an amenable number.

2051115433 is a deficient number, since it is larger than the sum of its proper divisors (120653867).

2051115433 is a wasteful number, since it uses less digits than its factorization.

2051115433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120653866.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 2051115433 is about 45289.2419124012. The cubic root of 2051115433 is about 1270.5644530404.

Adding to 2051115433 its reverse (3345111502), we get a palindrome (5396226935).

The spelling of 2051115433 in words is "two billion, fifty-one million, one hundred fifteen thousand, four hundred thirty-three".