51103211453 has 4 divisors (see below), whose sum is σ = 58403670240. Its totient is φ = 43802752668.

The previous prime is 51103211441. The next prime is 51103211459. The reversal of 51103211453 is 35411230115.

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, and also an emirpimes, since its reverse is a distinct semiprime: 35411230115 = 5 ⋅7082246023.

It is a cyclic number.

It is not a de Polignac number, because 51103211453 - 2¹⁶ = 51103145917 is a prime.

It is a super-2 number, since 2×51103211453² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51103211459) 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, 3650229383 + ... + 3650229396.

It is an arithmetic number, because the mean of its divisors is an integer number (14600917560).

Almost surely, 2^51103211453 is an apocalyptic number.

It is an amenable number.

51103211453 is a deficient number, since it is larger than the sum of its proper divisors (7300458787).

51103211453 is an equidigital number, since it uses as much as digits as its factorization.

51103211453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7300458786.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 51103211453 its reverse (35411230115), we get a palindrome (86514441568).

The spelling of 51103211453 in words is "fifty-one billion, one hundred three million, two hundred eleven thousand, four hundred fifty-three".