51263155453 has 4 divisors (see below), whose sum is σ = 51346782748. Its totient is φ = 51179528160.

The previous prime is 51263155421. The next prime is 51263155513. The reversal of 51263155453 is 35455136215.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35455136215 = 5 ⋅7091027243.

It can be written as a sum of positive squares in 2 ways, for example, as 5305228569 + 45957926884 = 72837^2 + 214378^2 .

It is a cyclic number.

It is not a de Polignac number, because 51263155453 - 2⁵ = 51263155421 is a prime.

It is a super-2 number, since 2×51263155453² (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 (51263155553) 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, 41812728 + ... + 41813953.

It is an arithmetic number, because the mean of its divisors is an integer number (12836695687).

Almost surely, 2^51263155453 is an apocalyptic number.

It is an amenable number.

51263155453 is a deficient number, since it is larger than the sum of its proper divisors (83627295).

51263155453 is an equidigital number, since it uses as much as digits as its factorization.

51263155453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83627294.

The product of its digits is 270000, while the sum is 40.

The spelling of 51263155453 in words is "fifty-one billion, two hundred sixty-three million, one hundred fifty-five thousand, four hundred fifty-three".