51433040553 has 4 divisors (see below), whose sum is σ = 68577387408. Its totient is φ = 34288693700.

The previous prime is 51433040551. The next prime is 51433040587. The reversal of 51433040553 is 35504033415.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51433040553 - 2¹ = 51433040551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51433040551) 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, 8572173423 + ... + 8572173428.

It is an arithmetic number, because the mean of its divisors is an integer number (17144346852).

Almost surely, 2^51433040553 is an apocalyptic number.

It is an amenable number.

51433040553 is a deficient number, since it is larger than the sum of its proper divisors (17144346855).

51433040553 is a wasteful number, since it uses less digits than its factorization.

51433040553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17144346854.

The product of its (nonzero) digits is 54000, while the sum is 33.

Adding to 51433040553 its reverse (35504033415), we get a palindrome (86937073968).

The spelling of 51433040553 in words is "fifty-one billion, four hundred thirty-three million, forty thousand, five hundred fifty-three".