51054444533 has 4 divisors (see below), whose sum is σ = 51076947660. Its totient is φ = 51031941408.

The previous prime is 51054444499. The next prime is 51054444547. The reversal of 51054444533 is 33544445015.

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 22752102244 + 28302342289 = 150838^2 + 168233^2 .

It is a cyclic number.

It is not a de Polignac number, because 51054444533 - 2¹⁴ = 51054428149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51054444733) 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, 11248160 + ... + 11252697.

It is an arithmetic number, because the mean of its divisors is an integer number (12769236915).

Almost surely, 2^51054444533 is an apocalyptic number.

It is an amenable number.

51054444533 is a deficient number, since it is larger than the sum of its proper divisors (22503127).

51054444533 is a wasteful number, since it uses less digits than its factorization.

51054444533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22503126.

The product of its (nonzero) digits is 288000, while the sum is 38.

Adding to 51054444533 its reverse (33544445015), we get a palindrome (84598889548).

The spelling of 51054444533 in words is "fifty-one billion, fifty-four million, four hundred forty-four thousand, five hundred thirty-three".