51544430453 has 4 divisors (see below), whose sum is σ = 53207154048. Its totient is φ = 49881706860.

The previous prime is 51544430429. The next prime is 51544430467. The reversal of 51544430453 is 35403444515.

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 51544430453 - 2¹⁶ = 51544364917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51544430473) 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, 831361751 + ... + 831361812.

It is an arithmetic number, because the mean of its divisors is an integer number (13301788512).

Almost surely, 2^51544430453 is an apocalyptic number.

It is an amenable number.

51544430453 is a deficient number, since it is larger than the sum of its proper divisors (1662723595).

51544430453 is a wasteful number, since it uses less digits than its factorization.

51544430453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662723594.

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

Adding to 51544430453 its reverse (35403444515), we get a palindrome (86947874968).

The spelling of 51544430453 in words is "fifty-one billion, five hundred forty-four million, four hundred thirty thousand, four hundred fifty-three".